Add plc utils

Update contains binaries for PLC utils.

hotfixes

hotfix simpleaudio control

Update

Fixes for Roon, MPD

New features:
Control the rear/front line input, amplifier etc of the Roomplayer via Beocreate2 -> General -> Simpleaudio Control Panel
Headphones automatically detected
Update the roomplayer from this repo via Beocreate2 -> General -> Simpleaudio Software Update

Simpleaudio Hifiberry

Beta