OPNSense widget (#730)

* Opnsense widget (#2)

* OPNSense widget : initial version, memory usage is inaccurate.

* OPNSense widget : code cleanup in widget.js. Firewall is no longer displayed, so it did not need to be queried.

* Opnsense widget (#3)

* OPNSense widget : initial version, memory usage is inaccurate.

* OPNSense widget : code cleanup in widget.js. Firewall is no longer displayed, so it did not need to be queried.

* OPNSense widget : fixing the CPU code to make it more reliable.

* OPNSense widget : fixing the CPU code to make it more reliable. Removing uptime info

* Update src/widgets/opnsense/component.jsx

Co-authored-by: shamoon <4887959+shamoon@users.noreply.github.com>

* Update public/locales/en/common.json

Co-authored-by: shamoon <4887959+shamoon@users.noreply.github.com>

* Update src/widgets/opnsense/component.jsx

Co-authored-by: shamoon <4887959+shamoon@users.noreply.github.com>

* Update src/widgets/opnsense/component.jsx

Co-authored-by: shamoon <4887959+shamoon@users.noreply.github.com>

public/locales/en/common.json

@@ -406,5 +406,11 @@
         "streams_all": "All Streams",
         "streams_active": "Active Streams",
         "streams_xepg": "XEPG Channels"
+    },
+    "opnsense": {
+        "cpu": "CPU Load",
+        "memory": "Active Memory",
+        "wanUpload": "WAN Upload",
+        "wanDownload": "WAN Download"
     }
 }