Add proto dumpsys support for AppBatteryTracker

Bug: 224604491
Test: adb shell dumpsys activity app-restrictions --proto |
        gqui from rawproto:- proto $ANDROID_BUILD_TOP/frameworks/base/core/proto/android/os/appbatterystats.proto:android.os.AppBatteryStatsProto --protoprint_annotations=no
Test: adb shell dumpsys activity app-restrictions --uid 10221 --proto |
        gqui from rawproto:- proto $ANDROID_BUILD_TOP/frameworks/base/core/proto/android/os/appbatterystats.proto:android.os.AppBatteryStatsProto --protoprint_annotations=no
Change-Id: I2789eb685db34589d6d8281e2107269344eb246f