feat: Added new docs

docusaurus/docs/Flutter/stream_chat_flutter/channel_list_view.mdx

@@ -4,3 +4,34 @@ sidebar_position: 4
 title: ChannelListView
 ---
 
+![screenshot](https://raw.githubusercontent.com/GetStream/stream-chat-flutter/master/screenshots/channel_list_view.png)
+![screenshot](https://raw.githubusercontent.com/GetStream/stream-chat-flutter/master/screenshots/channel_list_view_paint.png)
+
+It shows the list of current channels.
+
+```dart
+class ChannelListPage extends StatelessWidget {
+  @override
+  Widget build(BuildContext context) {
+    return Scaffold(
+      body: ChannelListView(
+        filter: Filter.in_('members', [StreamChat.of(context).user.id]),
+        sort: [SortOption('last_message_at')],
+        pagination: PaginationParams(
+          limit: 20,
+        ),
+        channelWidget: ChannelPage(),
+      ),
+    );
+  }
+}
+```
+
+
+Make sure to have a [StreamChat] ancestor in order to provide the
+information about the channels.
+The widget uses a [ListView.custom] to render the list of channels.
+
+The widget components render the ui based on the first ancestor of
+type [StreamChatTheme].
+Modify it to change the widget appearance.

docusaurus/docs/Flutter/stream_chat_flutter/introduction.mdx

@@ -3,3 +3,4 @@ id: introduction
 sidebar_position: 1
 title: Introduction
 ---
+

docusaurus/docs/Flutter/stream_chat_flutter/message_input.mdx

@@ -4,3 +4,47 @@ sidebar_position: 6
 title: Message Input
 ---
 
+The `MessageInput` widget deals with common elements related to sending a message such as a text field for typing text, 
+adding media to a message, quoting a message and more. The message input uses a stream channel ancestor to send a message. 
+The message input can be used along with a message list view to display messages.
+
+The message input also has commands such as Giphy and more which can be added. It can also be used to add custom attachments to your messages. 
+The message input is customisable and the orientation of the icons the text field and the send button can be changed.
+
+Widget used to enter the message and add attachments
+
+```dart
+class ChannelPage extends StatelessWidget {
+  const ChannelPage({
+    Key key,
+  }) : super(key: key);
+
+  @override
+  Widget build(BuildContext context) {
+    return Scaffold(
+      appBar: ChannelHeader(),
+      body: Column(
+        children: <Widget>[
+          Expanded(
+            child: MessageListView(
+              threadBuilder: (_, parentMessage) {
+                return ThreadPage(
+                  parent: parentMessage,
+                );
+              },
+            ),
+          ),
+          MessageInput(),
+        ],
+      ),
+    );
+  }
+}
+```
+
+You usually put this widget in the same page of a [MessageListView]
+as the bottom widget.
+
+The widget renders the ui based on the first ancestor of
+type [StreamChatTheme].
+Modify it to change the widget appearance.

docusaurus/docs/Flutter/stream_chat_flutter/message_list_view.mdx

@@ -4,7 +4,11 @@ sidebar_position: 5
 title: MessageListView
 ---
 
-The MessageListView shows the list of messages of the current channel.
+The `MessageListView` shows the list of messages of the current channel. It has inbuilt support for
+common messaging functionality: displaying and editing messages, adding / modifying reactions, support
+for quoting messages, pinning messages, and more.
+
+An example of how you can use the MessageListView is:
 
 ```dart
 class ChannelPage extends StatelessWidget {