[feat] add DeskHub device wall and shared group actions

apps/desktop/src/gui/features/devices/session_device_manager.cpp

@@ -585,6 +585,10 @@ int SessionDeviceManager::DestroyAudioOutput() {
   return 0;
 }
 
+void SessionDeviceManager::ClearAudio() {
+  if (output_stream_) SDL_ClearAudioStream(output_stream_);
+}
+
 void SessionDeviceManager::PushAudio(const char *data, size_t size) {
   if (!output_stream_) {
     return;

apps/desktop/src/gui/features/devices/session_device_manager.h

@@ -67,6 +67,7 @@ public:
 
   int InitializeAudioOutput();
   int DestroyAudioOutput();
+  void ClearAudio();
   void PushAudio(const char *data, size_t size);
 
   bool SendKeyboardCommand(int key_code, bool is_down, uint32_t scan_code,