Add virtual camera API and the aidl interfaces.

 - Single callback class for VirtualCamera
 - Update the virtual camera AIDL interface and parcelable to
   align with the planned API
 - Add interoperability between the client-server aidl and
   server-service aidl and update the related test

Test: atest VirtualCameraControllerTest
Bug: 270352264
Fixes: 302255544
API-Coverage-Bug: 310857520

Change-Id: I3ab768db277b5574d6fdb74b674d0500ffd6452e