chore: add trend badge (#132)

Author: feihongxu0824

README.md

@@ -16,6 +16,10 @@
   <a href="https://github.com/alibaba/zvec/blob/main/LICENSE"><img src="https://img.shields.io/badge/license-Apache%202.0-blue.svg" alt="License"/></a>
 </p>
 
+<p align="center">
+  <a href="https://trendshift.io/repositories/20830" target="_blank"><img src="https://trendshift.io/api/badge/repositories/20830" alt="alibaba%2Fzvec | Trendshift" style="width: 250px; height: 55px;" width="250" height="55"/></a>
+</p>
+
 <p align="center">
   <a href="https://zvec.org/en/docs/quickstart/">🚀 <strong>Quickstart</strong> </a> |
   <a href="https://zvec.org/en/">🏠 <strong>Home</strong> </a> |