Functioning music player features

Co-authored-by: Copilot <copilot@github.com>

macos/Flutter/GeneratedPluginRegistrant.swift

@@ -5,6 +5,10 @@
 import FlutterMacOS
 import Foundation
 
+import audio_session
+import just_audio
 
 func RegisterGeneratedPlugins(registry: FlutterPluginRegistry) {
+  AudioSessionPlugin.register(with: registry.registrar(forPlugin: "AudioSessionPlugin"))
+  JustAudioPlugin.register(with: registry.registrar(forPlugin: "JustAudioPlugin"))
 }