add namespacing

[shoulders]

This might be required for Joomla 4.

• look at breadcrumbs: namespacing

In for Joomla 4, seems to be a different way of loading a helper in a module. perhaps using autload

use Joomla\CMS\Helper\ModuleHelper;
use Joomla\Module\Breadcrumbs\Site\Helper\BreadcrumbsHelper;