Move dart & flutter packages to packages folder on root

packages/flutter/example/ios/Runner/AppDelegate.swift

@@ -0,0 +1,15 @@
+import UIKit
+import Flutter
+
+@UIApplicationMain
+@objc class AppDelegate: FlutterAppDelegate {
+  override func application(
+    _ application: UIApplication,
+    didFinishLaunchingWithOptions launchOptions: [UIApplication.LaunchOptionsKey: Any]?
+  ) -> Bool {
+    let dummy = dummy_method_to_enforce_bundling()
+    print(dummy)
+    GeneratedPluginRegistrant.register(with: self)
+    return super.application(application, didFinishLaunchingWithOptions: launchOptions)
+  }
+}