Alerting: Publish event when one or more rules are created or changed (#93637)

* Publish event when one or more rules are changed

* Publish affected rules

* Use a fake bus to test publish event without listening

* Wire alerting store into provisioning service

pkg/services/cloudmigration/cloudmigrationimpl/cloudmigration_test.go

@@ -782,7 +782,7 @@ func setUpServiceTest(t *testing.T, withDashboardMock bool) cloudmigration.Servi
 	fakeAccessControlService := actest.FakeService{}
 	alertMetrics := metrics.NewNGAlert(prometheus.NewRegistry())
 
-	ruleStore, err := ngalertstore.ProvideDBStore(cfg, featureToggles, sqlStore, mockFolder, dashboardService, fakeAccessControl)
+	ruleStore, err := ngalertstore.ProvideDBStore(cfg, featureToggles, sqlStore, mockFolder, dashboardService, fakeAccessControl, bus)
 	require.NoError(t, err)
 
 	ng, err := ngalert.ProvideService(