refactor code dir

rename ui/ to frontend/

frontend/macos/Flutter/GeneratedPluginRegistrant.swift

@@ -0,0 +1,22 @@
+//
+//  Generated file. Do not edit.
+//
+
+import FlutterMacOS
+import Foundation
+
+import audio_session
+import audioplayers_darwin
+import file_selector_macos
+import just_audio
+import path_provider_foundation
+import video_player_avfoundation
+
+func RegisterGeneratedPlugins(registry: FlutterPluginRegistry) {
+  AudioSessionPlugin.register(with: registry.registrar(forPlugin: "AudioSessionPlugin"))
+  AudioplayersDarwinPlugin.register(with: registry.registrar(forPlugin: "AudioplayersDarwinPlugin"))
+  FileSelectorPlugin.register(with: registry.registrar(forPlugin: "FileSelectorPlugin"))
+  JustAudioPlugin.register(with: registry.registrar(forPlugin: "JustAudioPlugin"))
+  PathProviderPlugin.register(with: registry.registrar(forPlugin: "PathProviderPlugin"))
+  FVPVideoPlayerPlugin.register(with: registry.registrar(forPlugin: "FVPVideoPlayerPlugin"))
+}