Alerting: Notifiication history (#107644)

* Add unified_alerting.notification_history to ini files

* Parse notification history settings

* Move Loki client to a separate package

* Loki client: add params for metrics and traces

* add NotificationHistorian

* rm writeDuration

* remove RangeQuery stuff

* wip

* wip

* wip

* wip

* pass notification historian in tests

* unify loki settings

* unify loki settings

* add test

* update grafana/alerting

* make update-workspace

* add feature toggle

* fix configureNotificationHistorian

* Revert "add feature toggle"

This reverts commit de7af8f7

* add feature toggle

* more tests

* RuleUID

* fix metrics test

* met.Info.Set(0)

pkg/services/ngalert/api/api_alertmanager_test.go

@@ -611,6 +611,7 @@ func createMultiOrgAlertmanager(t *testing.T, configs map[int64]*ngmodels.AlertC
 		log.New("testlogger"),
 		secretsService,
 		featuremgmt.WithManager(),
+		nil,
 	)
 	require.NoError(t, err)
 	err = mam.LoadAndSyncAlertmanagersForOrgs(context.Background())