Log AppBatteryTracker to statsd atom APP_BACKGROUND_RESTRICTIONS_INFO.

Log per-uid battery usage percentage in last 24 hours.
Log total battery usage, background battey usage, foreground service
battery usage.

Bug: NA.
Test: manual test, adb logcat | grep getBatteryTrackerInfoProtoLocked.
Change-Id: I2c17fcfa2343103ecc8ad899db2ca4f89428abfb