Update Jabra Speak DOCS.md (#387)

Add instructions for installing the Jabra peripheral controller bare metal as a service.

examples/Jabra Speak 410/DOCS.md

@@ -153,7 +153,37 @@ export XDG_RUNTIME_DIR=/run/user/1000
 export PULSE_SERVER=unix:/run/user/1000/pulse/native
 python main.py
 ```
+To make it persistent across reboots
+```
+mkdir -p ~/.config/systemd/user/
+nano ~/.config/systemd/user/jabra-lva.service
+```
 
+```
+[Unit]
+Description=Jabra Speak 410 LVA Controller
+After=network.target pipewire.service
+
+[Service]
+Type=simple
+WorkingDirectory=%h/linux-voice-assistant/examples/Jabra Speak 410
+ExecStart=%h/linux-voice-assistant/venv/bin/python main.py
+Restart=always
+RestartSec=5
+Environment="VOLUME_CONTROL=pipewire"
+Environment="LVA_WS_URL=ws://localhost:6055"
+Environment="XDG_RUNTIME_DIR=/run/user/1000"
+Environment="PULSE_SERVER=unix:/run/user/1000/pulse/native"
+
+[Install]
+WantedBy=default.target
+```
+Enable and start service
+```
+systemctl --user daemon-reload
+systemctl --user enable jabra-lva
+systemctl --user start jabra-lva
+```
 ---
 
 ## Configuration