misc/py-shell-gpt: add port: Command-line productivity tool powered by ChatGPT

A command-line productivity tool powered by OpenAI's ChatGPT
(GPT-3.5). As developers, we can leverage ChatGPT capabilities to
generate shell commands, code snippets, comments, and documentation,
among other things. Forget about cheat sheets and notes, with this
tool you can get accurate answers right in your terminal, and you'll
probably find yourself reducing your daily Google searches, saving you
valuable time and effort.

WWW: https://github.com/TheR1D/shell_gpt