Alerting: Allow alert rule pausing from API (#62326)

* Add is_paused attr to the POST alert rule group endpoint

* Add is_paused to alerting API POST alert rule group

* Fixed tests

* Add is_paused to alerting gettable endpoints

* Fix integration tests

* Alerting: allow to pause existing rules (#62401)

* Display Pause Rule switch in Editing Rule form

* add isPaused property to form interface and dto

* map isPaused prop with is_paused value from DTO

Also update test snapshots

* Append '(Paused)' text on alert list state column when appropriate

* Change Switch styles according to discussion with UX

Also adding a tooltip with info what this means

* Adjust styles

* Fix alignment and isPaused type definition

Co-authored-by: gillesdemey <gilles.de.mey@gmail.com>

* Fix test

* Fix test

* Fix RuleList test

---------

Co-authored-by: gillesdemey <gilles.de.mey@gmail.com>

* wip

* Fix tests and add comments to clarify AlertRuleWithOptionals

* Fix one more test

* Fix tests

* Fix typo in comment

* Fix alert rule(s) cannot be paused via API

* Add integration tests for alerting api pausing flow

* Remove duplicated integration test

---------

Co-authored-by: Virginia Cepeda <virginia.cepeda@grafana.com>
Co-authored-by: gillesdemey <gilles.de.mey@gmail.com>
Co-authored-by: George Robinson <george.robinson@grafana.com>

pkg/services/ngalert/api/tooling/api.json

@@ -1210,6 +1210,9 @@
      "format": "int64",
      "type": "integer"
     },
+    "is_paused": {
+     "type": "boolean"
+    },
     "namespace_id": {
      "format": "int64",
      "type": "integer"
@@ -2130,6 +2133,9 @@
      ],
      "type": "string"
     },
+    "is_paused": {
+     "type": "boolean"
+    },
     "no_data_state": {
      "enum": [
       "Alerting",