Create `xontrib-codex` for xonsh shell

[anki-code]

Hello @tom-doerr and all! Thank you for this extension!

I see the completion was implemented in python and this is the great opportunity to create Codex extension for the python-powered https://xon.sh shell!

How to do it:

• You can create xonsh xontrib (extension) by using 5-minutes template generator - xontrib-template. In case of examples there are around 100 xontribs on Github - topics/xontrib
• To understand how to use cursor in prompt-toolkit (xonsh prompt platform) you can review the xontrib-abbrevs code.

So you can create xontrib-codex for xonsh shell. It will be cool!

Thanks!

For community

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