add main menu interface

- MainMenu
 - ChatItem (Widget)
 - ChatFolder (Widget)
 - ChatFolders (Widget)
 - ColorTheme

client/lib/widgets/chatFoloder.dart

@@ -0,0 +1,32 @@
+import 'dart:io';
+
+import 'package:flutter/material.dart';
+
+class ChatFolder extends StatelessWidget{
+  Icon ?icon;
+  Icon iconn = Icon(Icons.folder, size: 50,);
+  String name;
+  ChatFolder({super.key, this.icon, required this.name}){
+    icon ??= Icon(Icons.folder);
+    iconn = Icon(icon?.icon, size: 50,);
+    
+  }
+  @override
+  Widget build(BuildContext context) {
+    return Padding(
+      padding: const EdgeInsets.fromLTRB(5, 2, 5, 2),
+        child: TextButton(
+          onPressed: () => print(name), 
+          style: ButtonStyle(foregroundColor: WidgetStatePropertyAll(Theme.of(context).colorScheme.onSurface)),
+          child: 
+            Row(
+              children: [
+                ?icon,
+                SizedBox(width: 2,),
+                Text(name, style: TextStyle(fontSize: 18),)
+              ],
+            ),
+      )
+    );
+  }
+}