functions.php

<?php

function my_edit_site_menu($wp_admin_bar) {
    $args = array(
        'parent'    => 'site-editor',
        'id' => 'theme-header',
        'title' => __('Header / Menu','twentytwentytwo-tm'),
        'href'  => admin_url('site-editor.php?postType=wp_template_part&postId=twentytwentytwo-tm%2F%2Fheader'),
        'meta'  => array( 'class' => 'twentytwentytwo-tm')
    );
    $wp_admin_bar->add_node( $args );    
    $args = array(
        'parent'    => 'site-editor',
        'id' => 'theme-templates',
        'title' => __('Templates','twentytwentytwo-tm'),
        'href'  => admin_url('site-editor.php?postType=wp_template'),
        'meta'  => array( 'class' => 'twentytwentytwo-tm')
    );
    $wp_admin_bar->add_node( $args );    
    $args = array(
        'parent'    => 'site-editor',
        'id' => 'theme-template-parts',
        'title' => __('Template Parts (header, footer, sidebar)','twentytwentytwo-tm'),
        'href'  => admin_url('site-editor.php?postType=wp_template_part'),
        'meta'  => array( 'class' => 'twentytwentytwo-tm')
    );
    $wp_admin_bar->add_node( $args );    
}
add_action( 'admin_bar_menu', 'my_edit_site_menu', 99 );