afegit fadeout de musica en Title al passar al joc

source/game/scenes/title.cpp

@@ -83,6 +83,7 @@ void Title::handleEvents() {
                         case SDLK_1:
                             exit_scene_ = SceneManager::Scene::GAME;
                             transitionToState(State::FADE_MENU);
+                            Audio::get()->fadeOutMusic(1000);
                             break;
 
                         case SDLK_2: