[Pod] Prepare AirplaneModeRepository to become a pod.

- Move AirplaneModeRepository interface out of the impl/ folder
- Move @AirplaneTableLog to a shared directory
- Create a Dagger module for just AirplaneModeRepo

Bug: 307607958
Flag: EXEMPT refactor
Test: Verify SystemUI builds
Test: atest AirplaneModeRepositoryImplTest
Change-Id: Ib0f43dd817e4f8284103e7b9b7245ff200fe8ca5