Correction du SoundEngine

src/main/java/engine/Kernel.java

src/main/java/engine/graphic/GraphicEngine.java

src/main/java/engine/graphic/ScoreComponent.java

src/main/java/engine/physic/PhysicEngine.java

src/main/java/engine/sound/SoundEngine.java

src/main/java/pong/PongApp.java