Move 'Code generated by' disclaimer up (#161)

`Code generated by` disclaimer should be at the top of the file, as it is demonstrated in [this article](https://go.dev/blog/generate) on The Go Blog.

The current placing breaks integration with some code formatters and linters which do no skip files generated by `genqlient`.

example/generated.go

@@ -1,7 +1,7 @@
-package main
-
 // Code generated by github.com/Khan/genqlient, DO NOT EDIT.
 
+package main
+
 import (
 	"context"
 	"time"

generate/header.go.tmpl

@@ -1,7 +1,7 @@
-package {{.Config.Package}}
-
 // Code generated by github.com/Khan/genqlient, DO NOT EDIT.
 
+package {{.Config.Package}}
+
 {{.Imports}}
 
 {{if and (ne .Config.ContextType "-") (ne .Config.ContextType "context.Context") }}

generate/testdata/snapshots/TestGenerate-ComplexInlineFragments.graphql-ComplexInlineFragments.graphql.go

@@ -1,7 +1,7 @@
-package test
-
 // Code generated by github.com/Khan/genqlient, DO NOT EDIT.
 
+package test
+
 import (
 	"encoding/json"
 	"fmt"

generate/testdata/snapshots/TestGenerate-ComplexNamedFragments.graphql-ComplexNamedFragments.graphql.go

@@ -1,7 +1,7 @@
-package test
-
 // Code generated by github.com/Khan/genqlient, DO NOT EDIT.
 
+package test
+
 import (
 	"encoding/json"
 	"fmt"

generate/testdata/snapshots/TestGenerate-CustomMarshal.graphql-CustomMarshal.graphql.go

@@ -1,7 +1,7 @@
-package test
-
 // Code generated by github.com/Khan/genqlient, DO NOT EDIT.
 
+package test
+
 import (
 	"encoding/json"
 	"fmt"

generate/testdata/snapshots/TestGenerate-CustomMarshalSlice.graphql-CustomMarshalSlice.graphql.go

@@ -1,7 +1,7 @@
-package test
-
 // Code generated by github.com/Khan/genqlient, DO NOT EDIT.
 
+package test
+
 import (
 	"encoding/json"
 	"fmt"

generate/testdata/snapshots/TestGenerate-DateTime.graphql-DateTime.graphql.go

@@ -1,7 +1,7 @@
-package test
-
 // Code generated by github.com/Khan/genqlient, DO NOT EDIT.
 
+package test
+
 import (
 	"time"
 

generate/testdata/snapshots/TestGenerate-EmptyInterface.graphql-EmptyInterface.graphql.go

@@ -1,7 +1,7 @@
-package test
-
 // Code generated by github.com/Khan/genqlient, DO NOT EDIT.
 
+package test
+
 import (
 	"github.com/Khan/genqlient/graphql"
 )

generate/testdata/snapshots/TestGenerate-Flatten.graphql-Flatten.graphql.go

@@ -1,7 +1,7 @@
-package test
-
 // Code generated by github.com/Khan/genqlient, DO NOT EDIT.
 
+package test
+
 import (
 	"encoding/json"
 	"fmt"

generate/testdata/snapshots/TestGenerate-InputEnum.graphql-InputEnum.graphql.go

@@ -1,7 +1,7 @@
-package test
-
 // Code generated by github.com/Khan/genqlient, DO NOT EDIT.
 
+package test
+
 import (
 	"github.com/Khan/genqlient/graphql"
 	"github.com/Khan/genqlient/internal/testutil"

generate/testdata/snapshots/TestGenerate-InputObject.graphql-InputObject.graphql.go

@@ -1,7 +1,7 @@
-package test
-
 // Code generated by github.com/Khan/genqlient, DO NOT EDIT.
 
+package test
+
 import (
 	"encoding/json"
 	"fmt"

generate/testdata/snapshots/TestGenerate-InterfaceListField.graphql-InterfaceListField.graphql.go

@@ -1,7 +1,7 @@
-package test
-
 // Code generated by github.com/Khan/genqlient, DO NOT EDIT.
 
+package test
+
 import (
 	"encoding/json"
 	"fmt"

generate/testdata/snapshots/TestGenerate-InterfaceListOfListsOfListsField.graphql-InterfaceListOfListsOfListsField.graphql.go

@@ -1,7 +1,7 @@
-package test
-
 // Code generated by github.com/Khan/genqlient, DO NOT EDIT.
 
+package test
+
 import (
 	"encoding/json"
 	"fmt"

generate/testdata/snapshots/TestGenerate-InterfaceNesting.graphql-InterfaceNesting.graphql.go

@@ -1,7 +1,7 @@
-package test
-
 // Code generated by github.com/Khan/genqlient, DO NOT EDIT.
 
+package test
+
 import (
 	"encoding/json"
 	"fmt"

generate/testdata/snapshots/TestGenerate-InterfaceNoFragments.graphql-InterfaceNoFragments.graphql.go

@@ -1,7 +1,7 @@
-package test
-
 // Code generated by github.com/Khan/genqlient, DO NOT EDIT.
 
+package test
+
 import (
 	"encoding/json"
 	"fmt"

generate/testdata/snapshots/TestGenerate-ListInput.graphql-ListInput.graphql.go

@@ -1,7 +1,7 @@
-package test
-
 // Code generated by github.com/Khan/genqlient, DO NOT EDIT.
 
+package test
+
 import (
 	"github.com/Khan/genqlient/graphql"
 	"github.com/Khan/genqlient/internal/testutil"

generate/testdata/snapshots/TestGenerate-ListOfListsOfLists.graphql-ListOfListsOfLists.graphql.go

@@ -1,7 +1,7 @@
-package test
-
 // Code generated by github.com/Khan/genqlient, DO NOT EDIT.
 
+package test
+
 import (
 	"github.com/Khan/genqlient/graphql"
 )

generate/testdata/snapshots/TestGenerate-MultipleDirectives.graphql-MultipleDirectives.graphql.go

@@ -1,7 +1,7 @@
-package test
-
 // Code generated by github.com/Khan/genqlient, DO NOT EDIT.
 
+package test
+
 import (
 	"encoding/json"
 	"fmt"

generate/testdata/snapshots/TestGenerate-Omitempty.graphql-Omitempty.graphql.go

@@ -1,7 +1,7 @@
-package test
-
 // Code generated by github.com/Khan/genqlient, DO NOT EDIT.
 
+package test
+
 import (
 	"encoding/json"
 	"fmt"

generate/testdata/snapshots/TestGenerate-Pointers.graphql-Pointers.graphql.go

@@ -1,7 +1,7 @@
-package test
-
 // Code generated by github.com/Khan/genqlient, DO NOT EDIT.
 
+package test
+
 import (
 	"encoding/json"
 	"fmt"

generate/testdata/snapshots/TestGenerate-PointersInline.graphql-PointersInline.graphql.go

@@ -1,7 +1,7 @@
-package test
-
 // Code generated by github.com/Khan/genqlient, DO NOT EDIT.
 
+package test
+
 import (
 	"encoding/json"
 	"fmt"

generate/testdata/snapshots/TestGenerate-Pokemon.graphql-Pokemon.graphql.go

@@ -1,7 +1,7 @@
-package test
-
 // Code generated by github.com/Khan/genqlient, DO NOT EDIT.
 
+package test
+
 import (
 	"github.com/Khan/genqlient/graphql"
 	"github.com/Khan/genqlient/internal/testutil"

generate/testdata/snapshots/TestGenerate-QueryWithAlias.graphql-QueryWithAlias.graphql.go

@@ -1,7 +1,7 @@
-package test
-
 // Code generated by github.com/Khan/genqlient, DO NOT EDIT.
 
+package test
+
 import (
 	"github.com/Khan/genqlient/graphql"
 	"github.com/Khan/genqlient/internal/testutil"

generate/testdata/snapshots/TestGenerate-QueryWithDoubleAlias.graphql-QueryWithDoubleAlias.graphql.go

@@ -1,7 +1,7 @@
-package test
-
 // Code generated by github.com/Khan/genqlient, DO NOT EDIT.
 
+package test
+
 import (
 	"github.com/Khan/genqlient/graphql"
 	"github.com/Khan/genqlient/internal/testutil"

generate/testdata/snapshots/TestGenerate-QueryWithEnums.graphql-QueryWithEnums.graphql.go

@@ -1,7 +1,7 @@
-package test
-
 // Code generated by github.com/Khan/genqlient, DO NOT EDIT.
 
+package test
+
 import (
 	"github.com/Khan/genqlient/graphql"
 )

generate/testdata/snapshots/TestGenerate-QueryWithSlices.graphql-QueryWithSlices.graphql.go

@@ -1,7 +1,7 @@
-package test
-
 // Code generated by github.com/Khan/genqlient, DO NOT EDIT.
 
+package test
+
 import (
 	"github.com/Khan/genqlient/graphql"
 )

generate/testdata/snapshots/TestGenerate-QueryWithStructs.graphql-QueryWithStructs.graphql.go

@@ -1,7 +1,7 @@
-package test
-
 // Code generated by github.com/Khan/genqlient, DO NOT EDIT.
 
+package test
+
 import (
 	"github.com/Khan/genqlient/graphql"
 )

generate/testdata/snapshots/TestGenerate-Recursion.graphql-Recursion.graphql.go

@@ -1,7 +1,7 @@
-package test
-
 // Code generated by github.com/Khan/genqlient, DO NOT EDIT.
 
+package test
+
 import (
 	"github.com/Khan/genqlient/graphql"
 	"github.com/Khan/genqlient/internal/testutil"

generate/testdata/snapshots/TestGenerate-SimpleInlineFragment.graphql-SimpleInlineFragment.graphql.go

@@ -1,7 +1,7 @@
-package test
-
 // Code generated by github.com/Khan/genqlient, DO NOT EDIT.
 
+package test
+
 import (
 	"encoding/json"
 	"fmt"

generate/testdata/snapshots/TestGenerate-SimpleInput.graphql-SimpleInput.graphql.go

@@ -1,7 +1,7 @@
-package test
-
 // Code generated by github.com/Khan/genqlient, DO NOT EDIT.
 
+package test
+
 import (
 	"github.com/Khan/genqlient/graphql"
 	"github.com/Khan/genqlient/internal/testutil"

generate/testdata/snapshots/TestGenerate-SimpleMutation.graphql-SimpleMutation.graphql.go

@@ -1,7 +1,7 @@
-package test
-
 // Code generated by github.com/Khan/genqlient, DO NOT EDIT.
 
+package test
+
 import (
 	"github.com/Khan/genqlient/graphql"
 	"github.com/Khan/genqlient/internal/testutil"

generate/testdata/snapshots/TestGenerate-SimpleNamedFragment.graphql-SimpleNamedFragment.graphql.go

@@ -1,7 +1,7 @@
-package test
-
 // Code generated by github.com/Khan/genqlient, DO NOT EDIT.
 
+package test
+
 import (
 	"encoding/json"
 	"fmt"

generate/testdata/snapshots/TestGenerate-SimpleQuery.graphql-SimpleQuery.graphql.go

@@ -1,7 +1,7 @@
-package test
-
 // Code generated by github.com/Khan/genqlient, DO NOT EDIT.
 
+package test
+
 import (
 	"github.com/Khan/genqlient/graphql"
 	"github.com/Khan/genqlient/internal/testutil"

generate/testdata/snapshots/TestGenerate-StructOption.graphql-StructOption.graphql.go

@@ -1,7 +1,7 @@
-package test
-
 // Code generated by github.com/Khan/genqlient, DO NOT EDIT.
 
+package test
+
 import (
 	"encoding/json"
 	"fmt"

generate/testdata/snapshots/TestGenerate-TypeName.graphql-TypeName.graphql.go

@@ -1,7 +1,7 @@
-package test
-
 // Code generated by github.com/Khan/genqlient, DO NOT EDIT.
 
+package test
+
 import (
 	"github.com/Khan/genqlient/graphql"
 	"github.com/Khan/genqlient/internal/testutil"

generate/testdata/snapshots/TestGenerate-TypeNames.graphql-TypeNames.graphql.go

@@ -1,7 +1,7 @@
-package test
-
 // Code generated by github.com/Khan/genqlient, DO NOT EDIT.
 
+package test
+
 import (
 	"encoding/json"
 	"fmt"

generate/testdata/snapshots/TestGenerate-UnionNoFragments.graphql-UnionNoFragments.graphql.go

@@ -1,7 +1,7 @@
-package test
-
 // Code generated by github.com/Khan/genqlient, DO NOT EDIT.
 
+package test
+
 import (
 	"encoding/json"
 	"fmt"

generate/testdata/snapshots/TestGenerate-UsesEnumTwice.graphql-UsesEnumTwice.graphql.go

@@ -1,7 +1,7 @@
-package test
-
 // Code generated by github.com/Khan/genqlient, DO NOT EDIT.
 
+package test
+
 import (
 	"github.com/Khan/genqlient/graphql"
 )

generate/testdata/snapshots/TestGenerate-unexported.graphql-unexported.graphql.go

@@ -1,7 +1,7 @@
-package test
-
 // Code generated by github.com/Khan/genqlient, DO NOT EDIT.
 
+package test
+
 import (
 	"encoding/json"
 	"fmt"

generate/testdata/snapshots/TestGenerateWithConfig-ClientGetter-testdata-queries-generated.go

@@ -1,7 +1,7 @@
-package queries
-
 // Code generated by github.com/Khan/genqlient, DO NOT EDIT.
 
+package queries
+
 import (
 	"context"
 

generate/testdata/snapshots/TestGenerateWithConfig-ClientGetterCustomContext-testdata-queries-generated.go

@@ -1,7 +1,7 @@
-package queries
-
 // Code generated by github.com/Khan/genqlient, DO NOT EDIT.
 
+package queries
+
 import (
 	"context"
 

generate/testdata/snapshots/TestGenerateWithConfig-ClientGetterNoContext-testdata-queries-generated.go

@@ -1,7 +1,7 @@
-package queries
-
 // Code generated by github.com/Khan/genqlient, DO NOT EDIT.
 
+package queries
+
 import (
 	"github.com/Khan/genqlient/internal/testutil"
 )

generate/testdata/snapshots/TestGenerateWithConfig-CustomContext-testdata-queries-generated.go

@@ -1,7 +1,7 @@
-package queries
-
 // Code generated by github.com/Khan/genqlient, DO NOT EDIT.
 
+package queries
+
 import (
 	"context"
 

generate/testdata/snapshots/TestGenerateWithConfig-DefaultConfig-testdata-queries-generated.go

@@ -1,7 +1,7 @@
-package queries
-
 // Code generated by github.com/Khan/genqlient, DO NOT EDIT.
 
+package queries
+
 import (
 	"context"
 

generate/testdata/snapshots/TestGenerateWithConfig-ExportOperations-testdata-queries-generated.go

@@ -1,7 +1,7 @@
-package queries
-
 // Code generated by github.com/Khan/genqlient, DO NOT EDIT.
 
+package queries
+
 import (
 	"context"
 

generate/testdata/snapshots/TestGenerateWithConfig-NoContext-testdata-queries-generated.go

@@ -1,7 +1,7 @@
-package queries
-
 // Code generated by github.com/Khan/genqlient, DO NOT EDIT.
 
+package queries
+
 import (
 	"github.com/Khan/genqlient/graphql"
 )

generate/testdata/snapshots/TestGenerateWithConfig-PackageName-testdata-queries-myfile.go

@@ -1,7 +1,7 @@
-package mypkg
-
 // Code generated by github.com/Khan/genqlient, DO NOT EDIT.
 
+package mypkg
+
 import (
 	"context"
 

generate/testdata/snapshots/TestGenerateWithConfig-StructReferences-testdata-queries-generated-structrefs.go

@@ -1,7 +1,7 @@
-package queries
-
 // Code generated by github.com/Khan/genqlient, DO NOT EDIT.
 
+package queries
+
 import (
 	"context"
 

generate/testdata/snapshots/TestGenerateWithConfig-Subpackage-testdata-queries-mypkg-myfile.go

@@ -1,7 +1,7 @@
-package mypkg
-
 // Code generated by github.com/Khan/genqlient, DO NOT EDIT.
 
+package mypkg
+
 import (
 	"context"
 

generate/testdata/snapshots/TestGenerateWithConfig-SubpackageConfig-testdata-queries-mypkg-myfile.go

@@ -1,7 +1,7 @@
-package mypkg
-
 // Code generated by github.com/Khan/genqlient, DO NOT EDIT.
 
+package mypkg
+
 import (
 	"context"
 

internal/integration/generated.go

@@ -1,7 +1,7 @@
-package integration
-
 // Code generated by github.com/Khan/genqlient, DO NOT EDIT.
 
+package integration
+
 import (
 	"context"
 	"encoding/json"