mpris mostly works, still need to init the state though

include/services/dbus/messages.hpp

@@ -16,6 +16,7 @@ struct MprisPlayer2Message {
     std::string title;
     std::vector<std::string> artist;
     std::string artwork_url;
+    std::string track_id;
     int64_t length_ms;
 
     std::function<void()> play_pause;