MediaMetrics: Implement audio power usage metrics

- Trigger audio power usage logging when
   1. endAudioIntervalGroup event for track/record
   2. setMode to NORMAL for telephony
- Aggregate audio usage by type and device
- Send audiousage data every 24hrs by default, using property
  persist.media.audio_power_metrics.interval_hr to config the interval
- Add property persist.media.audio_power_metrics.disable to disable
  audio power metrics

Bug: 121318157
Bug: 140909217
Test: atest mediametrics_tests
Test: adb shell dumpsys media.metrics --all
Change-Id: I94ff00a5609a49c96a14827d3260d481c1310abe
Signed-off-by: Robert Lee <lerobert@google.com>