ext_localconf.php

<?php 
// Register icon
/** @var \TYPO3\CMS\Core\Imaging\IconRegistry $iconRegistry */
$iconRegistry = \TYPO3\CMS\Core\Utility\GeneralUtility::makeInstance(\TYPO3\CMS\Core\Imaging\IconRegistry::class);
$iconRegistry->registerIcon(
    'power-captcha-icon',
    \TYPO3\CMS\Core\Imaging\IconProvider\SvgIconProvider::class,
    ['source' => 'EXT:power_captcha/Resources/Public/Icons/power-captcha-icon.svg']
);

// EXT:form integration
if (\TYPO3\CMS\Core\Utility\ExtensionManagementUtility::isLoaded('form')) {
    \TYPO3\CMS\Core\Utility\ExtensionManagementUtility::addTypoScriptSetup('
# Frontend    
plugin.tx_form.settings.yamlConfigurations {
    1712745318785 = EXT:power_captcha/Configuration/Yaml/FormSetup.yaml
}
# Backend
module.tx_form.settings.yamlConfigurations {
    1712745318785 = EXT:power_captcha/Configuration/Yaml/FormSetup.yaml
}
');
}

// EXT:powermail integration
if (\TYPO3\CMS\Core\Utility\ExtensionManagementUtility::isLoaded('powermail')) {
    \TYPO3\CMS\Core\Utility\ExtensionManagementUtility::addTypoScriptSetup(
        '@import "EXT:power_captcha/Configuration/TypoScript/Powermail/setup.typoscript"'
    );
    \TYPO3\CMS\Core\Utility\ExtensionManagementUtility::addPageTSConfig(
        '@import "EXT:power_captcha/Configuration/PageTsConfig/powermail.typoscript"'
    );
}

if(!isset($GLOBALS['TYPO3_CONF_VARS']['LOG']['PowerCaptcha']['writerConfiguration'])) {
    // configure logging for PowerCaptcha
    $GLOBALS['TYPO3_CONF_VARS']['LOG']['PowerCaptcha']['writerConfiguration'] = [
        \TYPO3\CMS\Core\Log\LogLevel::INFO => [
            // Add a FileWriter for loglevel INFO and above
            \TYPO3\CMS\Core\Log\Writer\FileWriter::class => [
                // Configuration for the writer (custom logfile infix)
                'logFileInfix' => 'powercaptcha',
            ],
        ],
    ];
}