Add changelog README and update roadmap with reference projects

- Created a new README file for the changelog to outline version history.
- Updated the roadmap documentation to replace the contribution section with a list of reference projects, enhancing resource visibility.

docs/content/roadmap.md

@@ -94,10 +94,11 @@
 
 ---
 
-## 参与贡献
+## 参考项目
 
-对路线图有建议？欢迎通过以下方式参与：
-
-- 在 [GitHub Issues](https://github.com/your-org/AI-VideoAssistant/issues) 提交功能请求
-- 在 [Discussions](https://github.com/your-org/AI-VideoAssistant/discussions) 参与讨论
-- 直接提交 PR 贡献代码
+* [Livekit Agent](https://github.com/livekit/agents)
+* [Pipecat](https://github.com/pipecat-ai/pipecat)
+* [vison-agent](https://github.com/GetStream/Vision-Agents)
+* [active-call](https://github.com/miuda-ai/active-call)
+* [TEN](https://github.com/TEN-framework/ten-framework)
+* [airi](https://github.com/moeru-ai/airi)