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/search/service.go

@@ -7,6 +7,7 @@ import (
 	"github.com/grafana/grafana/pkg/services/dashboards"
 	"github.com/grafana/grafana/pkg/services/sqlstore"
 	"github.com/grafana/grafana/pkg/services/star"
+	"github.com/grafana/grafana/pkg/services/user"
 	"github.com/grafana/grafana/pkg/setting"
 
 	"github.com/grafana/grafana/pkg/models"
@@ -30,7 +31,7 @@ type Query struct {
 	Title         string
 	Tags          []string
 	OrgId         int64
-	SignedInUser  *models.SignedInUser
+	SignedInUser  *user.SignedInUser
 	Limit         int64
 	Page          int64
 	IsStarred     bool