client: add script for listing available PulseAudio setups in Puavo-compatible format
client: support new audio sink/source field format in setup
client: rename variables
client: trivial refactoring
client: disable bash command tracing, needed only for debugging and developing
client: add command line interface to puavo-pulseaudio-setup
client: add --sink/--source options to puavo-pulseaudio-setup

These options can be used to override sink/source configurations defined
in Puavo.

This is useful for testing purposes.
client: add support for setting sink/source volumes
client: refactor out common audio setup code
client: make pacmd silent
client: smartboard quirk: set the default sink volume to 100% for USB 0b8c:0015