Add custom tab to user settings menu

/**
 *
 * Add custom tab to user settings menu
 *
 * @param array $menu
 *
 */
add_filter( 'streamtube/core/user/dashboard/menu/items', function( $menu ){

    $tab = array(
        'slug'      =>  'custom-tab',
        'text'      =>  esc_html__( 'Custom Tab', 'streamtube' ),
        'icon'      =>  'icon-star'
    );

    /**
     * Declare menu icon class
     * @link https://streamtube.marstheme.com/icons/
     */
    $menu_icon = 'icon-star';

    $menu['settings']['submenu'][ $tab['slug'] ] = array(
        'title'     =>  $tab['text'],
        'icon'      =>  $tab['icon'],
        'callback'  =>  function(){
            ?>
            <!-- Custom Content -->

            <p>
                Hello World
            </p>


            <?php

            // For instance, print current logged in username using shortcode

            echo do_shortcode( '[user_name user_id="logged_in"]' );
        },
        'priority'  =>  100
    );

    return $menu;
}, 10, 1 );