Add layer field to animation | enable animation customization in runners

engine/src/main/java/com/bartlomiejpluta/base/engine/world/animation/model/DefaultAnimation.java

@@ -43,6 +43,8 @@ public class DefaultAnimation extends MovableSprite implements Animation {
    private PathExecutor<Animation> pathExecutor = new PathExecutor<>(this);
    private boolean finishOnEnd;
    private boolean finishOnFail;
+
+   @Getter
    private Layer layer;
    private boolean isObjectLayer = false;