MacOS compatibility, boilerplate reduction and license files standardization

[pde-rent]

Hi @fred-wang ! Great work here, thank you so much for your work. It is very unfortunate that these fonts are not distributed in optimized web format (eg. woff2) out of the box.

After facing issues, I set out to update the repo to suit my needs:

• MacOS Ventura/Sequoia compatibility (makefile, curl etc)
• Deterministic license file naming (eg. origin archives COPYING.txt/LICENSE/LICENCE/OFL.txt -> standard LICENSE file)
• Lighter scripting and structure (no autoconf, more generic font fetching and output folder standardization)
• Stricter setup (pyproject for python dependencies)

Since most of the above are breaking changes, I forked and did not open a PRs, but please check-out my fork, let me know if you want some parts merged here.

https://github.com/pde-rent/MathFonts

Cheers Paul