Update README_CN.md with trending badage

Author: wenmengzhou

README_CN.md

@@ -22,6 +22,10 @@
 <a href="https://github.com/modelscope/swift/pulls"><img src="https://img.shields.io/badge/PR-welcome-55EB99.svg"></a>
 </p>
 
+<p align="center">
+<a href="https://trendshift.io/repositories/6427" target="_blank"><img src="https://trendshift.io/api/badge/repositories/6427" alt="modelscope%2Fswift | Trendshift" style="width: 250px; height: 55px;" width="250" height="55"/></a>
+</p>
+
 ##  📖 目录
 - [简介](#-简介)
 - [新闻](#-新闻)