refactoring: Fixed ghosts changing own spawn while moving

src/main/java/pacmanGame/Ghost.java

@@ -21,6 +21,6 @@ public class Ghost {
     }
     
     public void spawn() {
-    	this.position = gameManager.map.ghostSpawns[ghostNumber];
+    	this.position = gameManager.map.ghostSpawns[ghostNumber].Clone();
     }
 }