docs: add @utoo/web npm downloads badge to README

Co-authored-by: xusd320 <16577489+xusd320@users.noreply.github.com>

Author: Copilot

README.md

@@ -9,6 +9,7 @@
 [![npm](https://img.shields.io/npm/v/utoo?style=flat-square)](https://www.npmjs.com/package/utoo)
 [![npm downloads](https://img.shields.io/npm/dm/utoo?style=flat-square)](https://www.npmjs.com/package/utoo)
 [![@utoo/pack downloads](https://img.shields.io/npm/dm/@utoo/pack?style=flat-square)](https://www.npmjs.com/package/@utoo/pack)
+[![@utoo/web downloads](https://img.shields.io/npm/dm/@utoo/web?style=flat-square)](https://www.npmjs.com/package/@utoo/web)
 [![PM CI](https://github.com/utooland/utoo/actions/workflows/pm-ci.yml/badge.svg)](https://github.com/utooland/utoo/actions/workflows/pm-ci.yml)
 [![Pack CI](https://github.com/utooland/utoo/actions/workflows/pack-ci.yml/badge.svg)](https://github.com/utooland/utoo/actions/workflows/pack-ci.yml)