Add_action question

functions.php

<?php 
  include(get_template_directory() . '/includes/theme-setup.php');

theme-setup.php

<?php
  register_nav_menus( array(
    'nav-main' => __( 'Main Navigation'),
    'nav-secondary' => __('Secondary Navigation'),
  ) );

  register_sidebar( array(
    'name'          => 'Home right sidebar',
    'id'            => 'home_right_1',
    'before_widget' => '<div>',
    'after_widget'  => '</div>',
    'before_title'  => '<h2 class="rounded">',
    'after_title'   => '</h2>',
  ) );