docs: Update README with latest applications list [skip ci]

Author: github-actions[bot]

README.md

@@ -62,6 +62,7 @@ See [CONTRIBUTING.md](CONTRIBUTING.md) for detailed instructions.
 ### AI
 
 - [chat2api](commands/chat2api/) - A service that can convert ChatGPT on the web to OpenAI API format.
+- [gateway](commands/aI-gateway/) - A blazing fast AI Gateway with integrated guardrails. Route to 200+ LLMs, 50+ AI Guardrails with 1 fast & friendly API.
 - [kimi-free-api](commands/kimi-free-api/) - 🚀 KIMI AI 长文本大模型逆向API【特长：长文本解读整理】，支持高速流式输出、智能体对话、联网搜索、探索版、K1思考模型、长文档解读、图像解析、多轮对话，零配置部署，多路token支持，自动清理会话痕迹，仅供测试，如需商用请前往官方开放平台。
 - [NextChat](commands/NextChat/) - ✨ Light and Fast AI Assistant. Support: Web | iOS | MacOS | Android |  Linux | Windows