Added "pull to refresh" to Talk Roomlist

lib/screen/pages/talk/chatList.dart

@@ -90,7 +90,14 @@ class _ChatListState extends State<ChatList> {
           ));
         }
 
-        return ListView(children: chats);
+        return RefreshIndicator(
+          color: Theme.of(context).primaryColor,
+          onRefresh: () {
+            Provider.of<ChatListProps>(context, listen: false).run();
+            return Future.delayed(const Duration(seconds: 3));
+          },
+          child: ListView(children: chats),
+        );
       },
     );
   }