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/ldap/ldap.go

@@ -18,6 +18,7 @@ import (
 	"github.com/grafana/grafana/pkg/infra/log"
 	"github.com/grafana/grafana/pkg/models"
 	"github.com/grafana/grafana/pkg/services/login"
+	"github.com/grafana/grafana/pkg/services/org"
 )
 
 // IConnection is interface for LDAP connection manipulation
@@ -442,7 +443,7 @@ func (server *Server) buildGrafanaUser(user *ldap.Entry) (*models.ExternalUserIn
 		Login:    getAttribute(attrs.Username, user),
 		Email:    getAttribute(attrs.Email, user),
 		Groups:   memberOf,
-		OrgRoles: map[int64]models.RoleType{},
+		OrgRoles: map[int64]org.RoleType{},
 	}
 
 	for _, group := range server.Config.Groups {