Adding action after duplication finished

Requested feature: Allow plugins or themes to customize events after a duplication. It might be useful to have the old and new ID available in the action.

I think this is a very useful addition for complex pages that would want to do some action after it is duplicated.

/**
 * Elementor compatibility fixes
 */
    if(is_plugin_active( 'elementor/elementor.php' )){
        $css = Elementor\Core\Files\CSS\Post::create( $new_post_id );
        $css->update();
    } 
//  HERE added action
do_action( 'dt-duplicate-page-post-create', $new_post_id);
/*
* finally, redirecting to your choice
*/