Dashboard Alert Extractor: Create service for dashboard extractor and remove bus (#45518)

* Create DashAlertService service

* Remove no used dashboard service from plugin's manager that generates dependency cycle in Enterprise

* Remove bus for dashboard permissions

* Remove bus from dashboard extractor service

* Add missing argument

* Fix wire

* Fix lint

* More goimports

* Use datasource service instead sql calls

* Fix integration test

pkg/server/wire.go

@@ -213,6 +213,8 @@ var wireBasicSet = wire.NewSet(
 	dashboardimportservice.ProvideService,
 	wire.Bind(new(dashboardimport.Service), new(*dashboardimportservice.ImportDashboardService)),
 	plugindashboards.ProvideService,
+	alerting.ProvideDashAlertExtractorService,
+	wire.Bind(new(alerting.DashAlertExtractor), new(*alerting.DashAlertExtractorService)),
 	comments.ProvideService,
 )