Add a patterns link to the admin menu

This snippet adds an link to your patterns to the admin menu for quick access, along with a submenu item to add a new pattern.

function bb_patterns_admin_menu() {
    add_menu_page('Patterns', 'Patterns', 'edit_posts', 'edit.php?post_type=wp_block', '', 'dashicons-editor-table', 22);
    
    add_submenu_page('edit.php?post_type=wp_block', 'Add New Pattern', 'Add New Pattern', 'edit_posts', 'post-new.php?post_type=wp_block');
}
add_action('admin_menu', 'bb_patterns_admin_menu');