Add NRPyLaTeX to Projects using SymPy

[kennethsible]

Mailing List https://groups.google.com/g/sympy/c/iT7Ri1fnW3A GitHub https://github.com/zachetienne/nrpylatex

We recently published the Python package NRPyLaTeX on PyPI (nrpylatex · PyPI), and are currently writing a publication for Classical and Quantum Gravity (CQG). We developed NRPyLaTeX (originally a companion package to NRPy+) to provide a LaTeX interface to SymPy for General Relativity, including support for Einstein notation. We are proposing that NRPyLaTeX be added to the "Projects using SymPy" section of the SymPy homepage.

[kennethsible]

https://arxiv.org/abs/2111.05861 (a preprint of the publication)

[GregVernon]

@asmeurer -- any reason not to merge this?