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* Add initial UrBackup widget with counts of ok, errored, and out-of date clients

* Add configurable number of days since last backup before a client is considered out-of-date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

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

src/widgets/widgets.js

@@ -87,6 +87,7 @@ import uptimekuma from "./uptimekuma/widget";
 import watchtower from "./watchtower/widget";
 import whatsupdocker from "./whatsupdocker/widget";
 import xteve from "./xteve/widget";
+import urbackup from "./urbackup/widget";
 
 const widgets = {
   adguard,
@@ -177,6 +178,7 @@ const widgets = {
   unifi_console: unifi,
   unmanic,
   uptimekuma,
+  urbackup,
   watchtower,
   whatsupdocker,
   xteve,