Please package Sophia as a PyPi Package

[guilt]

Hi,

I can help, but essentially this is adding requirements.txt, manifest.in and setup.py and using twine to upload to PyPi. Since it has MIT License, it should be easily usable.

Idea is that someone can start using this library, and I wanted to see how users of a library such as transformers can start easily using this. See the draft PR here

Let me see if I can send a PR for it. I won't upload it to PyPi, i'd request @Liuhong99 and other authors to own the package.