Feature: UrBackup Widget (#1735)

* Add initial UrBackup widget with counts of ok, errored, and out-of date clients

* Add configurable number of days since last backup before a client is considered out-of-date

* Don't count a lack of recent (or error free) image backup if image backup isn't supported.

* Add support for reporting total disk usage

* add support for "fields" from services.yaml

* fix field filtering, syntax

* Consolidate urbackup code, syntax changes

* Revert pnpm changes

* re-add urbackup-server-api

---------

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

src/widgets/urbackup/proxy.js

@@ -0,0 +1,33 @@
+import {UrbackupServer} from "urbackup-server-api";
+
+import getServiceWidget from "utils/config/service-helpers";
+
+export default async function urbackupProxyHandler(req, res) {
+  const {group, service} = req.query;
+  const serviceWidget = await getServiceWidget(group, service);
+
+  const server = new UrbackupServer({
+    url: serviceWidget.url,
+    username: serviceWidget.username,
+    password: serviceWidget.password
+  });
+
+await (async () => {
+    try {
+      const allClients = await server.getStatus({includeRemoved: false});
+      let diskUsage = false
+      if (serviceWidget.fields?.includes("totalUsed")) {
+        diskUsage = await server.getUsage();
+      }
+      res.status(200).send({
+        clientStatuses: allClients,
+        diskUsage,
+        maxDays: serviceWidget.maxDays
+      });
+    } catch (error) {
+      res.status(500).json({ error: "Something Broke" })
+    }
+  })();
+
+
+}