Initial commit with Flutter and Node.js code

whatsapp_app/lib/config/app_config.dart

@@ -0,0 +1,8 @@
+class AppConfig {
+  static const String serverHost = "mywhatsappapp.interlap.com";
+  static const int serverPort = 3025;
+  static const String wsUrl = "ws://$serverHost:$serverPort";
+  
+  static const int maxReconnectAttempts = 10;
+  static const Duration reconnectDelay = Duration(seconds: 3);
+}