Implement preference service (#47870)

* Implement preference service

* Adjust wire.go

* Fix integration test user

* Fix api pref tests

* Fix a11y error

Co-authored-by: Alexandra Vargas <alexa1866@gmail.com>
Co-authored-by: Emil Tullstedt <emil.tullstedt@grafana.com>

pkg/api/http_server.go

@@ -51,6 +51,7 @@ import (
 	"github.com/grafana/grafana/pkg/services/notifications"
 	"github.com/grafana/grafana/pkg/services/plugindashboards"
 	pluginSettings "github.com/grafana/grafana/pkg/services/pluginsettings/service"
+	pref "github.com/grafana/grafana/pkg/services/preference"
 	"github.com/grafana/grafana/pkg/services/provisioning"
 	"github.com/grafana/grafana/pkg/services/query"
 	"github.com/grafana/grafana/pkg/services/queryhistory"
@@ -147,6 +148,7 @@ type HTTPServer struct {
 	DashboardsnapshotsService    *dashboardsnapshots.Service
 	PluginSettings               *pluginSettings.Service
 	AvatarCacheServer            *avatar.AvatarCacheServer
+	preferenceService            pref.Service
 }
 
 type ServerOptions struct {
@@ -178,7 +180,7 @@ func ProvideHTTPServer(opts ServerOptions, cfg *setting.Cfg, routeRegister routi
 	dashboardProvisioningService dashboards.DashboardProvisioningService, folderService dashboards.FolderService,
 	datasourcePermissionsService permissions.DatasourcePermissionsService, alertNotificationService *alerting.AlertNotificationService,
 	dashboardsnapshotsService *dashboardsnapshots.Service, commentsService *comments.Service, pluginSettings *pluginSettings.Service,
-	avatarCacheServer *avatar.AvatarCacheServer,
+	avatarCacheServer *avatar.AvatarCacheServer, preferenceService pref.Service,
 ) (*HTTPServer, error) {
 	web.Env = cfg.Env
 	m := web.New()
@@ -251,6 +253,7 @@ func ProvideHTTPServer(opts ServerOptions, cfg *setting.Cfg, routeRegister routi
 		PluginSettings:               pluginSettings,
 		permissionServices:           permissionsServices,
 		AvatarCacheServer:            avatarCacheServer,
+		preferenceService:            preferenceService,
 	}
 	if hs.Listener != nil {
 		hs.log.Debug("Using provided listener")