• I have searched the issues of this repository and believe that this is not a duplicate.

Describe the proposal

中文：
无第三方链路框架时候，在dubbo admin中开发一个可以自行查询链路的简单页面。
可参考zipkin、Jaeger。

en:
When there is no third-party link framework, develop a simple page for self query in dubbo admin.
Please refer to zipkin and Jaeger.