Add an option, --reset-all, to dumpsys batterystats.

* Removes historical battery usage stats data in addition to clearing batterystats.

Test: atest FrameworksCoreTests:BatteryUsageStatsStoreTest#testRemoveAllBusSnapshots
Bug: 226443003
Change-Id: I9b29f97b45f7aa3c49cd8e354107ab7f13a2ce7d