added a systemd service example as a reference

camera-client/camera_monitor.service.example

@@ -0,0 +1,12 @@
+[Unit]
+Description=Camera Monitor Service
+
+[Service]
+ExecStart=/path/to/your/python /path/to/your/camera_monitor.py
+WorkingDirectory=/path/to/your/app/directory
+User=your_user
+Group=your_group
+Restart=always
+
+[Install]
+WantedBy=multi-user.target