Add Avahi zeroconf publish module
Fixes #865 (closed).
Tested as below.
On PipeWire side,
pactl load-module module-native-protocol-tcp port=9999
pactl load-module module-zeroconf-publish port=9999
On the other PulseAudio/PipeWire side,
pactl load-module module-zeroconf-discover
PulseAudio version used during testing was 14.2.
Edited by Sanchayan Maity