Add new atoms for trusted hotword

These atoms will be logged immediately when
(1)HotwordDetectorCreateRequested:The assistant app created a
hotword detector.
(2)HotwordDetectionServiceInitResultReported:Received the
hotword detection service init result.
(3)HotwordDetectionServiceRestarted:The hotword detection
service is restarted.
(4)HotwordDetectorKeyphraseTriggered:Received the keyphrase
trigger and the result of handling this keyphrase trigger.
(5)HotwordDetectorEvents:Related to hotword detector events.
Ex:The status of the hotword detection service

Android Metrics Design Review : eldar/276723226

Bug: 207717787
Change-Id: I70c652f891cae5fbefb4cb113469cd7fa38565d1
Merged-in: Ide26a38be15dab3f284fc3975a5e331f45b508db
Test: build pass
(cherry picked from commit f7996fc5027b278a28dc76726b3fd377f014ed7f)
2 files changed
tree: 707e82eaac6edf50835d7956f9db15afb5f68178
  1. stats/
  2. OWNERS