feat: added method to stop animation (#1457)

* feat: added method to stop animation

* feat: stop animation method in Cluster

* feat: stop animation method in Cluster

* feat: stop animation method in Cluster

* feat: stop animation method in Cluster

Author: kikoso

library/src/main/java/com/google/maps/android/clustering/view/ClusterRendererMultipleItems.java

@@ -543,6 +543,12 @@ public void setAnimationDuration(long animationDurationMs) {
         mAnimationDurationMs = animationDurationMs;
     }
 
+    public void stopAnimation() {
+        for (AnimationTask animation : ongoingAnimations) {
+            animation.cancel();
+        }
+    }
+
     private static double distanceSquared(Point a, Point b) {
         return (a.x - b.x) * (a.x - b.x) + (a.y - b.y) * (a.y - b.y);
     }

library/src/main/java/com/google/maps/android/clustering/view/DefaultClusterRenderer.java

@@ -1156,7 +1156,7 @@ public void removeOnAnimationComplete(MarkerManager markerManager) {
             mMarkerManager = markerManager;
             mRemoveOnComplete = true;
         }
-
+        
         @Override
         public void onAnimationUpdate(ValueAnimator valueAnimator) {
             if (to == null || from == null || marker == null) {