Add pipewire.target

This allows an easy way to restart/stop all running parts with

systemctl restart --user pipewire.target
2 jobs for use-pipewire-target in 3 minutes and 26 seconds (queued for 1 second)
latest
Status Name Job ID Coverage
  Container
passed container_fedora #11128024

00:02:12

 
  Build
passed build_on_fedora #11128025

00:01:14