AudioRelay: Stream audio & mic

Sep 2, 2020

- [PREMIUM] Added multi-device connection (server v0.9 needed)
- Added a button to mute the PC (server v0.9 needed)
- Added a way to control the device's volume from the server (server v0.9 needed)
- Reworked the stats view
- Added an alternative audio implementation to fix volume and quality issues (via AudioTrack)
- Fixed an issue causing audio pops
- Experimenting with new ad formats
- Replaced AdColony by Facebook Audience Network

Update the server too!