feat: Added new docs

docusaurus/docs/Flutter/stream_chat_flutter/message_list_view.mdx

@@ -4,3 +4,40 @@ sidebar_position: 5
 title: MessageListView
 ---
 
+The MessageListView shows the list of messages of the current channel.
+
+```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(),
+        ],
+      ),
+    );
+  }
+}
+```
+
+Make sure to have a [StreamChannel] 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].