added systemd file for aqhome-react.

etc/0BUILD

@@ -6,6 +6,7 @@
     aqhome-data.service
     aqhome-mqttlog.service
     aqhome-nodes.service
+    aqhome-react.service
   </data>
 
   <data dist="true" install="$(sysconfdir)">

etc/aqhome-react.service

@@ -0,0 +1,16 @@
+[Unit]
+Description=AqHome React
+DefaultDependencies=no
+Wants=aqhome-data.service
+StartLimitIntervalSec=30
+StartLimitBurst=5
+
+[Service]
+Type=exec
+RemainAfterExit=no
+ExecStart=/usr/local/sbin/aqhome-react -p /var/run/aqhome-react.pid -T 0
+Restart=on-failure
+RestartSec=5s
+
+[Install]
+WantedBy=multi-user.target