[REFACTOR] healthd: BatteryMonitor use health 2.1 types

... instead of BatteryProperties. HealthInfo contains
much more information and is easy for health HAL impl
to use it.

Also add getHealthInfo* functions for health HAL
implentations to use.

Test: health VTS 2.0 test
Bug: 142260281
Change-Id: I188276788fd8f11e69f8e046b91a873afaa23457