Fix code style

app/src/main/java/com/cappielloantonio/play/interfaces/MediaCallback.java

@@ -3,6 +3,7 @@ package com.cappielloantonio.play.interfaces;
 import java.util.List;
 
 public interface MediaCallback {
+
     void onError(Exception exception);
 
     void onLoadMedia(List<?> media);

app/src/main/java/com/cappielloantonio/play/interfaces/MusicServiceEventListener.java

@@ -1,6 +1,7 @@
 package com.cappielloantonio.play.interfaces;
 
 public interface MusicServiceEventListener {
+
     void onServiceConnected();
 
     void onServiceDisconnected();