add mitex-python

[e-zz]

Hi, I've created Python bindings for mitex using PyO3.

Example usage:

import mitex_python
result = mitex_python.convert_latex_math("\\frac{1}{2}")
print(result)   # frac(1, 2)

This should be useful for Python developers needing LaTeX conversion capabilities. For installation instructions and complete documentation, please see crates/mitex-python/README.md of this pull request.

[OrangeX4]

Thanks for the pull request. Sorry for that I was a bit busy and didn't have time to look at it. Could you consider replacing this with a better solution instead of a Makefile? For example, using pyproject.toml, which would also eliminate the need for requirements.txt. And could you consider adding it to CI to upload the build artifacts to artifacts?