bitrix-module/intaro.intarocrm/include.php

<?php
CModule::AddAutoloadClasses(
    'intaro.intarocrm', // module name
    array (
        'IntaroCrm\RestApi' => 'classes/general/RestApi.php',
        'ICrmOrderActions'  => 'classes/general/ICrmOrderActions.php',
        'ICrmOrderEvent'    => 'classes/general/events/ICrmOrderEvent.php'
    )
);