Add dumpsys and shell cmd for sensor_privacy

E.g.

> adb shell dumpsys sensor_privacy
SENSOR PRIVACY MANAGER STATE (dumpsys sensor_privacy)
{
  is_enabled=false
}

> adb shell cmd sensor_privacy enable microphone

> adb shell dumpsys sensor_privacy
SENSOR PRIVACY MANAGER STATE (dumpsys sensor_privacy)
{
  is_enabled=false
  individual_enabled_sensor={
    sensor=1
    is_enabled=true
  }
}

Bug: 162549680
Test: Above shell commands
Change-Id: I5700ff5b0aae4f64d3bf54b5c51d8ab2779e5abf