Introduce ASurfaceTransaction_setOnCommit api

Introduce a new callback for SurfaceControl transactions that
fire after we commit a transaction in SurfaceFlinger. This
will help some clients pace when they should apply the next
transaction so it get applied on the next vsync. If they wait for
the existing transaction complete callback, there may not be
enough time between when the client applies the transaction
and surface flinger waking up and apply it on the new vsync.
This would mean the update would arrive a frame late.

Bug: 185843251
Test: atest ASurfaceControlTest
Change-Id: If0d5d01a1d5c2029eb81667356e666d7297376d4