feat: add action badage

Signed-off-by: seven <[email protected]>

Author: Blankll

README.md

@@ -1,2 +1,6 @@
 # Serverless-Adapter
-adapter for web framework express, koa, springboot to run in serverless function as backend of apigateway corss multi cloud provider like aliyun, huawei
+
+[![Node.js CI](https://github.com/geek-fun/serverless-adapter/actions/workflows/node.yml/badge.svg)](https://github.com/geek-fun/serverless-adapter/actions/workflows/node.yml)
+
+adapter for web framework express, koa, springboot to run in serverless function as backend of apigateway corss multi
+cloud provider like aliyun, huawei