Play a sound when starting and stopping recording with effects.

Normally, CameraService takes care of this, but with the effects
recording, CameraService doesn't know when recording is toggled on and
off. Mirrors the code in CameraService.cpp in terms of enforcing audio
output.

Bug: 5383166
Change-Id: I2175c1090ff57884d17cb422532a7930f29e10de
2 files changed