Merge changes from topic "397180418-1" into main

* changes:
  1.5 Create a new wrapper using the Shell APIs.
  1.4 Introduce AnimatedWindow to make the impl API-agnostic.
  1.3 Extract window selection to the wrapper.
  1.2 Extract IRemoteAnimationFinishedCallback from the impl.
  1.1 Split AnimationDelegate between a wrapper and an impl.