Plugins: Split plugin manager into smaller components (#54384)

* split out plugin manager

* remove whitespace

* fix tests

* split up tests

* updating naming conventions

* simplify manager

* tidy

* add more fakes

* testing time

* add query verif to int test

* renaming

* add process tests

* tidy up manager tests

* add extra case to int test

* add more coverage to store and process tests

* remove comment

* fix capatilization

* init on provide

* remove addfromsource from API

pkg/server/backgroundsvcs/background_services.go

@@ -8,7 +8,6 @@ import (
 	uss "github.com/grafana/grafana/pkg/infra/usagestats/service"
 	"github.com/grafana/grafana/pkg/infra/usagestats/statscollector"
 	"github.com/grafana/grafana/pkg/models"
-	"github.com/grafana/grafana/pkg/plugins/manager"
 	"github.com/grafana/grafana/pkg/registry"
 	"github.com/grafana/grafana/pkg/services/alerting"
 	"github.com/grafana/grafana/pkg/services/cleanup"
@@ -34,7 +33,7 @@ import (
 
 func ProvideBackgroundServiceRegistry(
 	httpServer *api.HTTPServer, ng *ngalert.AlertNG, cleanup *cleanup.CleanUpService, live *live.GrafanaLive,
-	pushGateway *pushhttp.Gateway, notifications *notifications.NotificationService, pm *manager.PluginManager,
+	pushGateway *pushhttp.Gateway, notifications *notifications.NotificationService,
 	rendering *rendering.RenderingService, tokenService models.UserTokenBackgroundService, tracing tracing.Tracer,
 	provisioning *provisioning.ProvisioningServiceImpl, alerting *alerting.AlertEngine, usageStats *uss.UsageStats,
 	statsCollector *statscollector.Service, grafanaUpdateChecker *updatechecker.GrafanaService,
@@ -58,7 +57,6 @@ func ProvideBackgroundServiceRegistry(
 		tokenService,
 		provisioning,
 		alerting,
-		pm,
 		grafanaUpdateChecker,
 		pluginsUpdateChecker,
 		metrics,