Link BatteryTrackerInfo to the metrics logging.

Add a new interface method for state trackers to implement
when AppRestrictionController asks for relevant tracker info
for logging.

This CL specifically links the info from AppBatteryTracker.

Bug: 217744262
Test: statsd_testdrive 441
Change-Id: Ie97653e804a00a240bcff80556b6e5532e4becf4