Merge music_player from https://github.com/xMasterX/all-the-plugins

music_player/music_player.c

@@ -30,7 +30,7 @@ typedef struct {
 
 typedef struct {
     MusicPlayerModel* model;
-    FuriMutex** model_mutex;
+    FuriMutex* model_mutex;
 
     FuriMessageQueue* input_queue;