feat: add initial support for InfiniteQuery

Added new infinite query class with it's own builder widget and integration with query_bowl
The `cast` method used in mutation and query are now a mixin instead of BasicOperation property

packages/fl_query/example/lib/components/basic_infinite_query.dart

@@ -0,0 +1,62 @@
+import 'dart:convert';
+
+import 'package:flutter/material.dart';
+import 'package:flutter/widgets.dart';
+import 'package:fl_query/fl_query.dart';
+import 'package:http/http.dart' as http;
+
+final infiniteQueryJob = InfiniteQueryJob<Map, void, int>(
+  queryKey: "infinite-posts",
+  initialParam: 1,
+  task: (queryKey, pageParam, externalData) async {
+    return jsonDecode(
+      (await http.get(
+        Uri.parse("https://jsonplaceholder.typicode.com/posts/$pageParam"),
+      ))
+          .body,
+    );
+  },
+  getNextPageParam: (lastPage, lastParam) {
+    return lastParam + 1;
+  },
+  getPreviousPageParam: (lastPage, lastParam) {
+    return lastParam - 1;
+  },
+);
+
+class BasicInfiniteQueryExample extends StatelessWidget {
+  const BasicInfiniteQueryExample({Key? key}) : super(key: key);
+
+  @override
+  Widget build(BuildContext context) {
+    return Scaffold(
+      appBar: AppBar(),
+      body: InfiniteQueryBuilder<Map, void, int>(
+          job: infiniteQueryJob,
+          externalData: null,
+          builder: (context, infiniteQuery) {
+            return Stack(
+              children: [
+                ListView.builder(
+                  itemCount: infiniteQuery.pages.length,
+                  itemBuilder: (context, index) {
+                    final page = infiniteQuery.pages[index];
+                    return ListTile(
+                      title: Text(page?["title"] ?? ""),
+                      subtitle: Text(page?["body"] ?? ""),
+                    );
+                  },
+                ),
+                Align(
+                  alignment: Alignment.bottomRight,
+                  child: IconButton(
+                    icon: const Icon(Icons.get_app_rounded),
+                    onPressed: () => infiniteQuery.fetchNextPage(),
+                  ),
+                ),
+              ],
+            );
+          }),
+    );
+  }
+}

packages/fl_query/example/lib/main.dart

@@ -1,3 +1,4 @@
+import 'package:fl_query_example/components/basic_infinite_query.dart';
 import 'package:fl_query_example/components/basic_mutation.dart';
 import 'package:fl_query_example/components/basic_query.dart';
 import 'package:fl_query_example/components/lazy_query.dart';
@@ -49,15 +50,26 @@ class _MyHomePageState extends State<MyHomePage> with WidgetsBindingObserver {
           child: Padding(
         padding: const EdgeInsets.all(8.0),
         child: Column(
-          children: const [
-            BasicQueryExample(),
-            QueryExternalDataExample(),
-            LazyQueryExample(),
-            QueryVariableKeyExample(),
-            QueryPreviousDataExample(),
-            Divider(),
-            BasicMutationExample(),
-            MutationVariableKeyExample(),
+          children: [
+            const BasicQueryExample(),
+            const QueryExternalDataExample(),
+            const LazyQueryExample(),
+            const QueryVariableKeyExample(),
+            const QueryPreviousDataExample(),
+            ListTile(
+              title: const Text("Infinite Query Example"),
+              trailing: const Icon(Icons.open_in_new),
+              onTap: () {
+                Navigator.of(context).push(
+                  MaterialPageRoute(
+                    builder: (context) => const BasicInfiniteQueryExample(),
+                  ),
+                );
+              },
+            ),
+            const Divider(),
+            const BasicMutationExample(),
+            const MutationVariableKeyExample(),
           ],
         ),
       )),