Implement deletion of trashed workspaces

[pcrespov]

        # IMPLICIT trash
        child_folders: list[FolderID] = []  # TODO: find children. Check with MD

        for folder_id in child_folders:
            await trash_folder(
                app,
                product_name=product_name,
                user_id=user_id,
                folder_id=folder_id,
                force_stop_first=force_stop_first,
            )

        child_projects: list[ProjectID] = []  # TODO: find children. Check with MD