feat: mumble instead of parole

mumble.service

@@ -0,0 +1,14 @@
+[Unit]
+Description=Mumble
+After=network.target
+
+[Service]
+ExecStart=xvfb-run mumble mumble://uli@miki
+WorkingDirectory=/home/pi
+StandardOutput=inherit
+StandardError=inherit
+Restart=always
+User=pi
+
+[Install]
+WantedBy=multi-user.target