Add global microphone mute key for keyboard

This change will enable the "mic mute" key on keyboards to globally mute
the microphone using the SensorManager, which has UI implemented in
multiple places (quick shortcuts, privacy center, settings...).

Test: manual
Bug: 237355207
Signed-off-by: LiZhihong <lizh52@lenovo.corp-partner.google.com>
Signed-off-by: DingYong <dingyong2@lenovo.corp-partner.google.com>
Change-Id: I492e501503b0ab9f56e1fa84fcc77a8c798bcb83