docs(localization): add localization docs

docusaurus/docs/Flutter/basics/introduction.mdx

@@ -28,6 +28,7 @@ The core package allows more customisation and hence provides business logic but
 reusable and customisable UI components.
 4. <b>Persistence (stream_chat_persistence)</b>: provides a persistence client for fetching and
 saving chat data locally.
+5. <b>Localizations (stream_chat_localizations)</b>: provides a set of localizations for the SDK.
 
 We recommend building prototypes using the full UI package since it contains UI widgets already
 integrated with Stream's API. [stream_chat_flutter](https://pub.dev/packages/stream_chat_flutter)

docusaurus/docs/Flutter/guides/adding_custom_attachments.mdx

@@ -1,6 +1,6 @@
 ---
 id: adding_custom_attachments
-sidebar_position: 2
+sidebar_position: 3
 title: Adding Custom Attachments
 ---
 

docusaurus/docs/Flutter/guides/adding_localization.mdx

@@ -0,0 +1,97 @@
+---
+id: adding_localization
+sidebar_position: 2
+title: Adding Localization
+---
+
+Adding Localization To UI Widgets
+
+### Introduction
+
+We have a dedicated package for adding localization to our UI widgets. It's called `stream_chat_localizations` and you can find it [here](https://pub.dev/packages/stream_chat_localizations).
+
+### Supported languages
+
+At the moment we support the following languages:
+- [English](https://pub.dev/documentation/stream_chat_localizations/latest/stream_chat_localization/StreamChatLocalizationsEn-class.html)
+- [Hindi](https://pub.dev/documentation/stream_chat_localizations/latest/stream_chat_localization/StreamChatLocalizationsHi-class.html)
+- [Italian](https://pub.dev/documentation/stream_chat_localizations/latest/stream_chat_localization/StreamChatLocalizationsIt-class.html)
+- [French](https://pub.dev/documentation/stream_chat_localizations/latest/stream_chat_localization/StreamChatLocalizationsFr-class.html)
+
+More languages will be added in the future. Feel free to [contribute](https://github.com/GetStream/stream-chat-flutter/blob/master/CONTRIBUTING.md) to add more languages.
+
+### Add dependency
+
+Add this to your package's pubspec.yaml file, use the latest version [![Pub](https://img.shields.io/pub/v/stream_chat_localizations.svg)](https://pub.dartlang.org/packages/stream_chat_localizations)
+```yaml
+dependencies:
+ stream_chat_localizations: ^latest_version
+```
+
+You should then run `flutter packages get`
+
+### Usage
+
+```dart
+import 'package:flutter/material.dart';
+import 'package:stream_chat_localizations/stream_chat_localizations.dart';
+
+void main() {
+  WidgetsFlutterBinding.ensureInitialized();
+  runApp(MyApp());
+}
+
+class MyApp extends StatelessWidget {
+  @override
+  Widget build(BuildContext context) {
+    return MaterialApp(
+      // Add all the supported locales
+      supportedLocales: const [
+        Locale('en'),
+        Locale('hi'),
+        Locale('fr'),
+        Locale('it'),
+      ],
+      // Add GlobalStreamChatLocalizations.delegates
+      localizationsDelegates: GlobalStreamChatLocalizations.delegates,
+      builder: (context, widget) => StreamChat(
+        client: client,
+        child: widget,
+      ),
+      home: StreamChannel(
+        channel: channel,
+        child: const ChannelPage(),
+      ),
+    );
+  }
+}
+```
+
+### Adding a new language
+
+To add a new language, you need to create a new class extending `GlobalStreamChatLocalizations` and create a delegate for it adding it to the `delegates` array.
+
+Checkout [this example](https://github.com/GetStream/stream-chat-flutter/blob/master/packages/stream_chat_localizations/example/lib/add_new_lang.dart) to see how to add a new language.
+
+### Override exisiting languages
+
+To override an existing language, you need to create a new class extending that particular language class and create a delegate for it adding it to the `delegates` array.
+
+Checkout [this example](https://github.com/GetStream/stream-chat-flutter/blob/master/packages/stream_chat_localizations/example/lib/override_lang.dart) to see how to override an existing language.
+
+### ⚠️ Note on **iOS**
+
+For translation to work on **iOS** you need to add supported locales to 
+`ios/Runner/Info.plist` as described [here](https://flutter.dev/docs/development/accessibility-and-localization/internationalization#specifying-supportedlocales).
+
+Example:
+
+```xml
+<key>CFBundleLocalizations</key>
+<array>
+	<string>en</string>
+	<string>nb</string>
+	<string>fr</string>
+	<string>it</string>
+</array>
+```

docusaurus/docs/Flutter/guides/migration_guide_2_0.mdx

@@ -1,6 +1,6 @@
 ---
 id: mig_guide_2_0
-sidebar_position: 3
+sidebar_position: 4
 title: Migrating to 2.0 (Null-safety)
 ---
 

packages/stream_chat/test/src/core/models/user_test.dart

@@ -29,7 +29,6 @@ void main() {
       expect(newUser.id, user.id);
       expect(newUser.role, user.role);
       expect(newUser.name, user.name);
-      expect(newUser.language, user.language);
 
       newUser = user.copyWith(
         id: 'test',
@@ -42,7 +41,6 @@ void main() {
       expect(newUser.id, 'test');
       expect(newUser.role, 'test');
       expect(newUser.name, 'test');
-      expect(newUser.language, 'en');
     });
   });
 }

packages/stream_chat_localizations/README.md

@@ -13,6 +13,7 @@
 - [Register](https://getstream.io/chat/trial/) to get an API key for Stream Chat
 - [Flutter Chat Tutorial](https://getstream.io/chat/flutter/tutorial/) 
 - [Chat UI Kit](https://getstream.io/chat/ui-kit/)
+- [UI Docs](https://getstream.io/chat/docs/sdk/flutter/stream_chat_flutter/introduction/)
 
 This package provides localized strings for the stream chat widgets for many languages.
 
@@ -23,10 +24,10 @@ Check out the [changelog on pub.dev](https://pub.dev/packages/stream_chat_locali
 ## Supported languages
 
 At the moment we support the following languages:
-- [English](https://pub.dev/documentation/stream_chat_localizations/latest/stream_chat_localizations/StreamChatLocalizationsEn-class.html)
+- [English](https://pub.dev/documentation/stream_chat_localizations/latest/stream_chat_localization/StreamChatLocalizationsEn-class.html)
-- [Hindi](https://pub.dev/documentation/stream_chat_localizations/latest/stream_chat_localizations/StreamChatLocalizationsHi-class.html)
+- [Hindi](https://pub.dev/documentation/stream_chat_localizations/latest/stream_chat_localization/StreamChatLocalizationsHi-class.html)
-- [Italian](https://pub.dev/documentation/stream_chat_localizations/latest/stream_chat_localizations/StreamChatLocalizationsIt-class.html)
+- [Italian](https://pub.dev/documentation/stream_chat_localizations/latest/stream_chat_localization/StreamChatLocalizationsIt-class.html)
-- [French](https://pub.dev/documentation/stream_chat_localizations/latest/stream_chat_localizations/StreamChatLocalizationsFr-class.html)
+- [French](https://pub.dev/documentation/stream_chat_localizations/latest/stream_chat_localization/StreamChatLocalizationsFr-class.html)
 
 More languages will be added in the future. Feel free to [contribute](https://github.com/GetStream/stream-chat-flutter/blob/master/CONTRIBUTING.md) to add more languages.