Refactor AudioPlayer for improved native playback handling and debugging

- Introduced a stop flag mechanism to manage audio playback more effectively.
- Enhanced native playback logic to ensure proper stopping of existing streams before starting new playback.
- Updated error handling and logging for better visibility during playback operations.
- Refactored audio output handling in Rust to support stopping playback and outputting silence when required.
- Improved the integration of native playback with WaveSurfer for seamless audio visualization.

tauri/src-tauri/src/main.rs

@@ -385,6 +385,13 @@ async fn play_audio_to_devices(
     state.play_audio_to_devices(audio_data, device_ids).await
 }
 
+#[command]
+fn stop_audio_playback(
+    state: State<'_, audio_output::AudioOutputState>,
+) -> Result<(), String> {
+    state.stop_all_playback()
+}
+
 #[cfg_attr(mobile, tauri::mobile_entry_point)]
 pub fn run() {
     tauri::Builder::default()
@@ -443,7 +450,8 @@ pub fn run() {
             stop_system_audio_capture,
             is_system_audio_supported,
             list_audio_output_devices,
-            play_audio_to_devices
+            play_audio_to_devices,
+            stop_audio_playback
         ])
         .on_window_event(|window, event| {
             if let WindowEvent::CloseRequested { api, .. } = event {