This ensures we properly duck any "multimedia" streams when playing
event sounds. We also introduce an alert group for e.g. cell broadcasts.
For testing copy to
~/.config/wireplumber/wireplumber.conf.d/media-role-nodes.conf
and
systemctl --user restart wireplumber
Signed-off-by: Guido Günther <agx@sigxcpu.org>
feedbackd terminates feedback when clients disconnect from DBus so
we need to wait a bit before quitting as otherwise no feedback will
be played.
Closes: #65