希望anyproxy可以提供流式转发的能力

AnyProxy向客户端发送请求前，会调用beforeSendResponse, 因为beforeSendResponse中的参数需要包含本次响应的全部数据, 所以anyproxy实际上需要先缓存本次请求的所有数据, 这对于下载比较大的文件不够友好, 希望能够增加流式转发的能力

实现上可以参考mitmproxy, 增加beforeSendResponseHeaders接口, 在此接口中决定是否进行流式转发

mitmproxy中的例子
https://docs.mitmproxy.org/stable/addons-examples/#example-complexstreampy
https://docs.mitmproxy.org/stable/addons-examples/#example-complexstream_modifypy

Start by tracing AnyProxy’s existing beforeSendResponse flow and how response bodies are buffered. Compare the proposed beforeSendResponseHeaders hook with the linked mitmproxy complexstream and complexstream_modify examples; done means large responses can be forwarded incrementally without buffering the complete body while retaining response interception behavior.

Written by the indexing model from the issue text.