Add dialer mute and speaker functionality
This drops the custom wrapper around the pulseaudio copied from UBports in favour of using pulseaudio-qt directly.
Things tested,
- Normal call audio
- Speaker toggling
- Mute toggling*
- Headphone jack*
For headphone jack code side is all correct, except there is jack detection bug in UCM of PinePhone. Similarly for Mute control there is bugfix in UCM which I have locally.
Edited by Bhushan Shah