longhorn support

* longhorn widget for showing storage stats as "disks"

src/components/widgets/widget.jsx

@@ -13,6 +13,7 @@ const widgetMappings = {
   unifi_console: dynamic(() => import("components/widgets/unifi_console/unifi_console")),
   glances: dynamic(() => import("components/widgets/glances/glances")),
   openmeteo: dynamic(() => import("components/widgets/openmeteo/openmeteo")),
+  longhorn: dynamic(() => import("components/widgets/longhorn/longhorn")),
 };
 
 export default function Widget({ widget }) {