请求帮助：我需要将response与对应的request关联起来

### Issue description
我使用ext-plugin-post-req和ext-plugin-post-resp两个插件配合实现一些功能。
在ext-plugin-post-req阶段会缓存一些信息，需要在ext-plugin-post-resp的时候知道对应哪个request。

我已经尝试过使用request-id插件，但是在response阶段，ext-plugin-post-resp运行在request-id之前，所以无法从header中获取到request-id产生的id。

有什么方法可以在go-runner里，将response和request关联么？

### Environment

* APISIX Go Plugin Runner's version:
* APISIX version:
* Go version:
* OS (cmd: `uname -a`):

Start by reviewing the ext-plugin-post-req and ext-plugin-post-resp stages and the request-id plugin's execution order in the Go Plugin Runner. Determine whether the runner exposes a supported request-to-response association, and document the required approach or the scope of a new design.

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