Auth: Implement requester interface in access control module (#74289)

* Implement requester interface in the access control module

pkg/services/folder/folderimpl/folder.go

@@ -254,7 +254,7 @@ func (s *Service) getFolderByTitle(ctx context.Context, orgID int64, title strin
 func (s *Service) Create(ctx context.Context, cmd *folder.CreateFolderCommand) (*folder.Folder, error) {
 	logger := s.log.FromContext(ctx)
 
-	if cmd.SignedInUser == nil {
+	if cmd.SignedInUser == nil || cmd.SignedInUser.IsNil() {
 		return nil, folder.ErrBadRequest.Errorf("missing signed in user")
 	}
 

pkg/services/folder/model.go

@@ -138,8 +138,7 @@ type GetFolderQuery struct {
 	Title *string
 	OrgID int64
 
-	SignedInUser *user.SignedInUser `json:"-"`
-	Requester    identity.Requester `json:"-"`
+	SignedInUser identity.Requester `json:"-"`
 }
 
 // GetParentsQuery captures the information required by the folder service to