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/store/storage_git.go

@@ -14,7 +14,7 @@ import (
 
 	"github.com/grafana/grafana-plugin-sdk-go/data"
 	"github.com/grafana/grafana/pkg/infra/filestorage"
-	"github.com/grafana/grafana/pkg/models"
+	"github.com/grafana/grafana/pkg/services/user"
 	"github.com/grafana/grafana/pkg/setting"
 	"gocloud.dev/blob"
 )
@@ -339,15 +339,15 @@ func (s *rootStorageGit) Write(ctx context.Context, cmd *WriteValueRequest) (*Wr
 	if msg == "" {
 		msg = "changes from grafana ui"
 	}
-	user := cmd.User
-	if user == nil {
-		user = &models.SignedInUser{}
+	usr := cmd.User
+	if usr == nil {
+		usr = &user.SignedInUser{}
 	}
 
 	hash, err := w.Commit(msg, &git.CommitOptions{
 		Author: &object.Signature{
-			Name:  firstRealString(user.Name, user.Login, user.Email, "?"),
-			Email: firstRealString(user.Email, user.Login, user.Name, "?"),
+			Name:  firstRealString(usr.Name, usr.Login, usr.Email, "?"),
+			Email: firstRealString(usr.Email, usr.Login, usr.Name, "?"),
 			When:  time.Now(),
 		},
 	})