Add query URL parameters to the custom permalink

<?php
/**
 * 1. Add custom metabox
 */
function pm_add_metabox() {
  add_meta_box(
    'bis_additional-data',
    __( 'Query URL Parameters', 'bis' ),
    'bis_mb_html',
    array('page'),
    'side',
    'high'
  );
}
add_action( 'add_meta_boxes', 'pm_add_metabox' );

function bis_mb_html($post) {
    wp_nonce_field( '_pm_metabox_nonce', 'pm_metabox_nonce' );

    $pm_url_parameters = esc_textarea(get_post_meta(get_the_ID(), 'pm_url_parameters', true));
    ?>

    <p>
        <input class="widefat" name="pm_url_parameters" type="text" value="<?php echo esc_attr( $pm_url_parameters ); ?>">
    </p>
    <?php
}

/**
 * 2. Save custom metabox data
 */
function pm_metabox_save($post_id) {
    if ( defined( 'DOING_AUTOSAVE' ) && DOING_AUTOSAVE ) { return; }
    if ( ! isset( $_POST['pm_metabox_nonce'] ) || ! wp_verify_nonce( $_POST['pm_metabox_nonce'], '_pm_metabox_nonce' ) ) { return; }
    if ( ! current_user_can( 'edit_post', $post_id ) ) { return; }

    if ( isset( $_POST['pm_url_parameters'] ) || isset( $_POST['pm_url_parameters'] ) ) {
        update_post_meta( $post_id, 'pm_url_parameters', $_POST['pm_url_parameters'] );
    }

}
add_action( 'save_post', 'pm_metabox_save' );

/**
 * 3. Add query URL parameters to the custom permalink
 */
function pm_append_url_parameter($permalink, $post) {
  if(!empty($post->post_type) && (in_array($post->post_type, array('page')))) {
        $pm_url_parameters = esc_textarea(get_post_meta(get_the_ID(), 'pm_url_parameters', true));

        if(!empty($pm_url_parameters)) {
            $permalink .= $pm_url_parameters;
        }
    }

    return $permalink;
}
add_filter('permalink_manager_filter_final_post_permalink', 'pm_append_url_parameter', 999, 2);