Add more fields to FGS_STATE_CHANGED atom.

- Add "FGS-start-API"
(Context.startService()? Context.startForegroundService()? Delegate?)

- Add whether setFgsRestrictionLocked() was called in startForeground()

Fix: 300644381
Test: Manual test with debug logging
Test: atest MockingOomAdjusterTests
Change-Id: I59e85eb494e3802c480e407343d2a0128d138767