Migrating some animation spec logic to shared lib

- Used for the current transition to/from Recents and for docking, move the
  async app transition animation spec logic to the lib.  It will be removed
  later once we have app controled surface controls.

Bug: 67510855
Test: Launch recents/app, dock app from dragging

Change-Id: I1cf972991e5ef73906c3bcd8e5ff187ce2e62cd8