ext_tables.php

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

$GLOBALS['TYPO3_CONF_VARS']['SC_OPTIONS']['extbase']['commandControllers'][] = 'FluidTYPO3\Builder\Command\BuilderCommandController';

\TYPO3\CMS\Extbase\Utility\ExtensionUtility::registerPlugin('FluidTYPO3.Builder', 'Frontend', 'Builder: Frontend access to builder', 'EXT:builder/ext_icon.gif');
\TYPO3\CMS\Extbase\Utility\ExtensionUtility::registerPlugin('FluidTYPO3.Builder', 'Doodle', 'Builder: Doodle plugin', 'EXT:builder/ext_icon.gif');

if ('BE' === TYPO3_MODE) {
	\TYPO3\CMS\Extbase\Utility\ExtensionUtility::registerModule(
		'FluidTYPO3.Builder',
		'tools',
		'txbuilderM1',
		'',
		array(
			'Backend' => 'index,syntax,build,buildForm',
		),
		array(
			'access' => 'user,group',
			'icon' => 'EXT:' . $_EXTKEY . '/Resources/Public/Icons/' .
				(6.2 === (float) substr(TYPO3_version, 0, 3) ? 'builder.gif' : 'module_builder.png'),
			'labels' => 'LLL:EXT:' . $_EXTKEY . '/Resources/Private/Language/locallang.xlf'
		)
	);

	\TYPO3\CMS\Core\Utility\ExtensionManagementUtility::addLLrefForTCAdescr(
		'builder',
		'EXT:' . $_EXTKEY . '/Resources/Private/Language/locallang.xlf'
	);

}