Create onFinish Animation hook

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

@@ -99,6 +99,11 @@ public class DefaultAnimation extends MovableSprite implements Animation {
       this.isObjectLayer = layer instanceof ObjectLayer;
    }
 
+   @Override
+   public void onFinish(Layer layer) {
+      // do nothing
+   }
+
    @Override
    public void finish() {
       this.forcedFinish = true;

engine/src/main/java/com/bartlomiejpluta/base/engine/world/map/layer/base/BaseLayer.java

@@ -48,6 +48,7 @@ public abstract class BaseLayer implements Layer, Updatable {
 
          if (animation.finished()) {
             iterator.remove();
+            animation.onFinish(this);
          }
       }
    }