Introduce APIs to support CDM data sync

- Adds a new `requestAction()` API. This method binds the target
  companion app's service to ensure it can perform background work, and
  then dispatches the action request.
- Implements `setOnDevicePresenceEventListener` and a corresponding
  broadcast mechanism. This allows other system services to listen for
  detailed `DevicePresenceEvent`s from companion apps.
- Implements 'setOnActionResultListener' to allow system to get
  callback when apps notify ActionResult to CDM.
- Add a new `notifyActionResult`to allow apps to notify result to
  CDM
- Deprecated notifydeviceAppeared/notifyDeviceDisappeared system APIs,
  introudced a new system API called notifyDevicePresence to replace
  the deprecated one.
- Added ActionRequest
- Added ActionResult
- Added new events in DevicePresenceEvent.

This provides the foundation for the data sync feature, allowing the
system to safely manage the companion app's lifecycle while it performs
requested background tasks.

Test: CTS
Bug: 422195296
Flag: android.companion.enable_data_sync
Change-Id: I60390c65e6e5704e4807d4aa016da71df0c3e273