Initial commit with Flutter and Node.js code

.gitignore

@@ -0,0 +1,26 @@
+# Node.js Backend
+whatsapp_bridge/node_modules/
+whatsapp_bridge/.wwebjs_auth/
+whatsapp_bridge/.wwebjs_cache/
+whatsapp_bridge/.puppeteer/
+whatsapp_bridge/package-lock.json
+
+# Flutter / Dart
+whatsapp_app/.dart_tool/
+whatsapp_app/.flutter-plugins
+whatsapp_app/.flutter-plugins-dependencies
+whatsapp_app/.packages
+whatsapp_app/build/
+whatsapp_app/ios/Pods/
+whatsapp_app/ios/.symlinks/
+whatsapp_app/ios/Flutter/Flutter.framework/
+whatsapp_app/ios/Flutter/Flutter.podspec
+whatsapp_app/android/.gradle/
+whatsapp_app/android/app/build/
+whatsapp_app/android/local.properties
+
+# OS/IDE
+.DS_Store
+.idea/
+.vscode/
+*.swp