Add filter soil/relative-url-filters

[QWp6t]

This will allow users to modify the filters to which the relative-urls.php module applies.

An example for disabling it on scripts, styles, and images would be the following:

add_filter('soil/relative-url-filters', function ($filters) {
  return array_diff($filters, ['script_loader_src', 'style_loader_src', 'wp_get_attachment_url']);
});