refactor: Folder structure and MVC chat ui

lib/views/ui/empty_page_ui.dart

@@ -0,0 +1,12 @@
+import 'package:flutter/material.dart';
+
+class EmptyPage extends StatelessWidget {
+  @override
+  Widget build(BuildContext context) {
+    return Scaffold(
+      body: Center(
+        child: Image.asset('assets/favicon.png', width: 100, height: 100),
+      ),
+    );
+  }
+}