Add example Systemd unit

utils/systemd/openmonero.service

@@ -0,0 +1,15 @@
+[Unit]
+Description=Wownero Full Node
+After=wownero.service
+Wants=wownero.service
+
+[Service]
+User=openmonero
+Group=openmonero
+LogsDirectory=openmonero
+Type=simple
+ExecStart=/usr/local/bin/openmonero --config-file /etc/openmonero.json \
+  --log-file /var/log/openmonero/openmonero.log
+
+[Install]
+WantedBy=multi-user.target