[Feature] Live markdown rendering using rich

[PRO-2684]

Simple modifications that live renders response.

#76

[acheong08]

Doesn't work on MacOS and Linux for some reason

[PRO-2684]

Doesn't work on MacOS and Linux for some reason

What's the output?

[acheong08]

Doesn't work on MacOS and Linux for some reason

What's the output?

Repeated output. It doesn't clear the previous ones

[PRO-2684]

Doesn't work on MacOS and Linux for some reason

What's the output?

Repeated output. It doesn't clear the previous ones

It works well on my linux machine, whether ssh or locally. Maybe you are using an old terminal emulator that doesn't fully support the new features. For compatibility reasons though, we can add an argument for enabling/disabling the use of rich.

[acheong08]

Possibly my font. Yes, please reopen this with support for disabling it

[wukan1986]

@PRO-2684 感谢你提供Markdown格式的代码，但发现有一个问题，搜索 一些问题时，打印更新到一半，忽然又自动全删了，提示无法回答此问题。

[wukan1986]

@PRO-2684 如果自动全删的问题解决不了，可以考虑加一个命令，每次将当前的字符串存下来，可以切换上一条的输出是Markdown格式还是原始格式，以及之后的输出格式是什么

[PRO-2684]

Since this PR is merged and can't be reopened, I'll start a new PR.

[PRO-2684]

@acheong08 #138
@wukan1986 #138 现在 bing 尝试撤回时会保留原内容