Add CodeQL badge to README (#31)

Author: HackingRepo

README.md

@@ -13,6 +13,7 @@
 [![Install size](https://packagephobia.com/badge?p=dssrf)](https://packagephobia.com/result?p=dssrf)
 [![Open Source Helpers](https://www.codetriage.com/hackingrepo/dssrf-js/badges/users.svg)](https://www.codetriage.com/hackingrepo/dssrf-js)
 [![Contributors](https://img.shields.io/github/contributors/HackingRepo/dssrf-js)](https://github.com/HackingRepo/dssrf-js/graphs/contributors)
+[![CodeQL](https://github.com/HackingRepo/dssrf-js/actions/workflows/github-code-scanning/codeql/badge.svg)](https://github.com/HackingRepo/dssrf-js/actions/workflows/github-code-scanning/codeql)
 
 `dssrf` is a priotized security‑first URL and network validation library designed to eliminate entire classes of SSRF vulnerabilities - from basic bypasses to extremely advanced bypass techniques used in real‑world attacks.