Add InputDeviceBatteryListener to InputManager

System apps can now register an InputDeviceBatteryListener on a
per-device basis to be notified of battery changes.

- InputManager manages registration of the binder callback with
  InputManagerService to ensure that there is only one battery
  listener per process.
- The battery listener is invoked immediately upon registration
  to provide the initial battery state for the device.
- The callbacks are removed automatically when the process dies.
- This CL does not yet identify changes in battery state for monitored
  devices.

DD: go/inputdevice-battery-notifications

Bug: 243005009
Test: atest FrameworkServicesTests
Test: atest FrameworkCoreTests
Change-Id: Idf2b06a099155a6f5cc13b55dcd40852f54aa56c