Folder: Add folder service implementation (#58182)

* Folder: Add folder service implementation

* Add Move

* Add tests

* Add new servie method and adjust Update, Delete and Move

* Remove contains

* GetTree return children of depth one

pkg/services/folder/folderimpl/sqlstore.go

@@ -120,6 +120,12 @@ func (ss *sqlStore) Update(ctx context.Context, cmd folder.UpdateFolderCommand)
 			args = append(args, cmd.Folder.UID)
 		}
 
+		if cmd.NewParentUID != nil {
+			columnsToUpdate = append(columnsToUpdate, "parent_uid = ?")
+			cmd.Folder.ParentUID = *cmd.NewParentUID
+			args = append(args, cmd.Folder.UID)
+		}
+
 		if len(columnsToUpdate) == 0 {
 			return folder.ErrBadRequest.Errorf("no columns to update")
 		}