ext_tables.php

<?php
if (!defined('TYPO3_MODE')) {
    die ('Access denied.');
}



\TYPO3\CMS\Core\Utility\ExtensionManagementUtility::allowTableOnStandardPages('tx_irfaq_q');
\TYPO3\CMS\Core\Utility\ExtensionManagementUtility::allowTableOnStandardPages('tx_irfaq_cat');
\TYPO3\CMS\Core\Utility\ExtensionManagementUtility::allowTableOnStandardPages('tx_irfaq_expert');



$GLOBALS['TBE_MODULES_EXT']['xMOD_db_new_content_el']['addElClasses']['Netcreators\\Irfaq\\System\\Backend\\WizardIcon'] =
    \TYPO3\CMS\Core\Utility\ExtensionManagementUtility::extPath('irfaq')
        . 'Classes/System/Backend/WizardIcon.php';

/** @var \TYPO3\CMS\Core\Imaging\IconRegistry $iconRegistry */
$iconRegistry = \TYPO3\CMS\Core\Utility\GeneralUtility::makeInstance(\TYPO3\CMS\Core\Imaging\IconRegistry::class);
$iconRegistry->registerIcon(
    'tcarecords-pages-contains-irfaq',
    \TYPO3\CMS\Core\Imaging\IconProvider\BitmapIconProvider::class,
    ['source' => 'EXT:irfaq/Resources/Public/Icons/icon_tx_irfaq_sysfolder.gif']
);