Add Reusable blocks menu item to WordPress Admin area

add-reusable-blocks-wp-admin.php

<?php
// Add Reusable blocks to WordPress Admin area
function add_reusable_blocks_admin_menu() {
    add_menu_page( 'Reusable Blocks',
        'Reusable Blocks',
        'edit_posts',
        'edit.php?post_type=wp_block',
        '',
        'dashicons-editor-table',
        22
    );
}
add_action( 'admin_menu', 'add_reusable_blocks_admin_menu' );