mrmbepages/Configuration/TCA/Overrides/sys_template.php

<?php
/**
 * TYPO3 Configuration Array (TCA) to override the system template model
 *
 * @package EXT:mrmbepages
 */

\TYPO3\CMS\Core\Utility\ExtensionManagementUtility::addStaticFile(
    'mrmbepages',
    'Configuration/TypoScript',
    'Manage Page Extension'
);