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* Add initial UrBackup widget with counts of ok, errored, and out-of date clients

* Add configurable number of days since last backup before a client is considered out-of-date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

pnpm-lock.yaml

@@ -73,6 +73,9 @@ dependencies:
   tough-cookie:
     specifier: ^4.1.2
     version: 4.1.2
+  urbackup-server-api:
+    specifier: ^0.8.9
+    version: 0.8.9
   winston:
     specifier: ^3.8.2
     version: 3.8.2
@@ -659,6 +662,12 @@ packages:
     resolution: {integrity: sha512-eBvWn1lvIApYMhzQMsu9ciLfkBY499mFZlNqG+/9WR7PVlroQw0vG30cOQQbaKz3sCEc44TAOu2ykzqXSNnwag==}
     dev: true
 
+  /async-mutex@0.3.2:
+    resolution: {integrity: sha512-HuTK7E7MT7jZEh1P9GtRW9+aTWiDWWi9InbZ5hjxrnRa39KS4BW04+xLBhYNS2aXhHUIKZSw3gj4Pn1pj+qGAA==}
+    dependencies:
+      tslib: 2.5.0
+    dev: false
+
   /async@3.2.4:
     resolution: {integrity: sha512-iAB+JbDEGXhyIUavoDl9WP/Jj106Kz9DEn1DPgYw5ruDn0e3Wgi3sKFm55sASdGBNOQB8F59d9qQ7deqrHA8wQ==}
     dev: false
@@ -2691,6 +2700,18 @@ packages:
       - babel-plugin-macros
     dev: false
 
+  /node-fetch@2.6.12:
+    resolution: {integrity: sha512-C/fGU2E8ToujUivIO0H+tpQ6HWo4eEmchoPIoXtxCrVghxdKq+QOHqEZW7tuP3KlV3bC8FRMO5nMCC7Zm1VP6g==}
+    engines: {node: 4.x || >=6.0.0}
+    peerDependencies:
+      encoding: ^0.1.0
+    peerDependenciesMeta:
+      encoding:
+        optional: true
+    dependencies:
+      whatwg-url: 5.0.0
+    dev: false
+
   /node-int64@0.4.0:
     resolution: {integrity: sha512-O5lz91xSOeoXP6DulyHfllpq+Eg00MWitZIbtPfoSEvqIHdl5gfcY6hYzDWnj0qD5tz52PI08u9qUvSVeUBeHw==}
     dev: false
@@ -3719,6 +3740,10 @@ packages:
       url-parse: 1.5.10
     dev: false
 
+  /tr46@0.0.3:
+    resolution: {integrity: sha512-N3WMsuqV66lT30CrXNbEjx4GEwlow3v6rr4mCcv6prnfwhS01rkgyFdjPNBYd9br7LpXV1+Emh01fHnq2Gdgrw==}
+    dev: false
+
   /triple-beam@1.3.0:
     resolution: {integrity: sha512-XrHUvV5HpdLmIj4uVMxHggLbFSZYIn7HEWsqePZcI50pco+MPqJ50wMGY794X7AOOhxOBAjbkqfAbEe/QMp2Lw==}
     dev: false
@@ -3822,6 +3847,15 @@ packages:
       picocolors: 1.0.0
     dev: true
 
+  /urbackup-server-api@0.8.9:
+    resolution: {integrity: sha512-Igu6A0xSZeMsiN6PWT7zG4aD+iJR5fXT/j5+xwAvnD/vCNfvVrettIsXv6MftxOajvTmtlgaYu8KDoH1EJQ6DQ==}
+    dependencies:
+      async-mutex: 0.3.2
+      node-fetch: 2.6.12
+    transitivePeerDependencies:
+      - encoding
+    dev: false
+
   /uri-js@4.4.1:
     resolution: {integrity: sha512-7rKUyy33Q1yc98pQ1DAmLtwX109F7TIfWlW1Ydo8Wl1ii1SeHieeh0HHfPeL2fMXK6z0s8ecKs9frCuLJvndBg==}
     dependencies:
@@ -3867,6 +3901,17 @@ packages:
     engines: {node: '>=0.10.0'}
     dev: false
 
+  /webidl-conversions@3.0.1:
+    resolution: {integrity: sha512-2JAn3z8AR6rjK8Sm8orRC0h/bcl/DqL7tRPdGZ4I1CjdF+EaMLmYxBHyXuKL849eucPFhvBoxMsflfOb8kxaeQ==}
+    dev: false
+
+  /whatwg-url@5.0.0:
+    resolution: {integrity: sha512-saE57nupxk6v3HY35+jzBwYa0rKSy0XR8JSxZPwgLr7ys0IBzhGviA1/TUGJLmSVqs8pb9AnvICXEuOHLprYTw==}
+    dependencies:
+      tr46: 0.0.3
+      webidl-conversions: 3.0.1
+    dev: false
+
   /which-boxed-primitive@1.0.2:
     resolution: {integrity: sha512-bwZdv0AKLpplFY2KZRX6TvyuN7ojjr7lwkg6ml0roIy9YeuSr7JS372qlNW18UQYzgYK9ziGcerWqZOmEn9VNg==}
     dependencies: