Add gitcode icon (#1594)

README.md

@@ -8,6 +8,7 @@
 ![](https://img.shields.io/github/stars/opengoofy/hippo4j?color=5470c6)
 ![](https://img.shields.io/github/forks/opengoofy/hippo4j?color=3ba272)
 ![](https://img.shields.io/github/contributors/opengoofy/hippo4j)
+[![star](https://gitcode.com/opengoofy/hippo4j/star/badge.svg)](https://gitcode.com/opengoofy/hippo4j)
 [![Docker Pulls](https://img.shields.io/docker/pulls/hippo4j/hippo4j-server.svg?label=docker%20pulls&color=fac858)](https://store.docker.com/community/images/hippo4j/hippo4j-server)
 [![codecov](https://codecov.io/gh/opengoofy/hippo4j/branch/develop/graph/badge.svg?token=WBUVJN107I)](https://codecov.io/gh/opengoofy/hippo4j)
 [![EN doc](https://img.shields.io/badge/readme-English-orange.svg)](https://github.com/opengoofy/hippo4j/blob/develop/README-EN.md)