Introduce a new IOriginTransitions.aidl interface for handling origin

return transitions.

The interface allows an app to link a launching transition with a return transition.
And the APIs are protected with permission
android.permission.CONTROL_REMOTE_APP_TRANSITION_ANIMATIONS.

Flag: com.google.android.clockwork.systemui.flags.transitions_enable_origin_transitions_backend
Bug: 347060315
Test: manual test using test app
Change-Id: Iaffb16fcb39a7a8fbd49bd752af71521c468270f