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/accesscontrol/resourcepermissions/api.go

@@ -10,6 +10,7 @@ import (
 	"github.com/grafana/grafana/pkg/api/routing"
 	"github.com/grafana/grafana/pkg/models"
 	"github.com/grafana/grafana/pkg/services/accesscontrol"
+	"github.com/grafana/grafana/pkg/services/org"
 	"github.com/grafana/grafana/pkg/web"
 )
 
@@ -97,7 +98,7 @@ func (a *api) getPermissions(c *models.ReqContext) response.Response {
 		permissions = append(permissions, accesscontrol.ResourcePermission{
 			Actions:     a.service.actions,
 			Scope:       "*",
-			BuiltInRole: string(models.ROLE_ADMIN),
+			BuiltInRole: string(org.RoleAdmin),
 		})
 	}