Move SignedInUser to user service and RoleType and Roles to org (#53445)

* Move SignedInUser to user service and RoleType and Roles to org

* Use go naming convention for roles

* Fix some imports and leftovers

* Fix ldap debug test

* Fix lint

* Fix lint 2

* Fix lint 3

* Fix type and not needed conversion

* Clean up messages in api tests

* Clean up api tests 2

pkg/services/dashboardsnapshots/models.go

@@ -4,7 +4,7 @@ import (
 	"time"
 
 	"github.com/grafana/grafana/pkg/components/simplejson"
-	"github.com/grafana/grafana/pkg/models"
+	"github.com/grafana/grafana/pkg/services/user"
 )
 
 // DashboardSnapshot model
@@ -102,7 +102,7 @@ type GetDashboardSnapshotsQuery struct {
 	Name         string
 	Limit        int
 	OrgId        int64
-	SignedInUser *models.SignedInUser
+	SignedInUser *user.SignedInUser
 
 	Result DashboardSnapshotsList
 }