Alerting: Support for active time intervals in notification policies (#104252)

* add active_time_intervals to route model

* update k8s compat layer

* update notification policies service to validate active time intervals

* update integration tests

* update openapi

* add active time interval to model

* update route generator to include active time interval

* Update storage list and rename methods to handle active intervals

* update api model

* update provisioning and export models

* update ui to allow active timing config

* update i18n

* fix snapshots for ui tests

* run prettier

* Alerting: Active time intervals UI naming (#104402)

* update naming in UI

* update naming in the edit page title

* update translations

* update alerting module

---------

Signed-off-by: Yuri Tseretyan <yuriy.tseretyan@grafana.com>
Co-authored-by: Sonia Aguilar <33540275+soniaAguilarPeiron@users.noreply.github.com>
Co-authored-by: Sonia Aguilar <soniaaguilarpeiron@gmail.com>

pkg/tests/apis/openapi_snapshots/notifications.alerting.grafana.app-v0alpha1.json

@@ -3599,6 +3599,13 @@
           "continue"
         ],
         "properties": {
+          "active_time_intervals": {
+            "type": "array",
+            "items": {
+              "type": "string",
+              "default": ""
+            }
+          },
           "continue": {
             "type": "boolean",
             "default": false