feat: Rewrite crd2jsonschema in Go

[kalbasit]

This is probably not the best fix for #76 but Go is more stable anyways. The code is generated by Gemini by giving it the Python version (and the test file). I didn't spend time going over the code manually because I wanted to first know if you're open to taking this code; At that point I can spend time ensuring the code meets my Go standards. I will also update the Github workflow.

fixes #76

[arnarg]

While I definitely prefer programming in Go over python, I went with python originally as I do not want to have a compilation step for the user or a requirement for a binary cache. Fetching a few dependencies for a python environment from the standard NixOS binary cache is fairly quick.

Thanks for the contribution though! I want to rather workaround the issue in #76 by removing the loader that is causing trouble in pyyaml.

[kalbasit]

That's a fair view although one could argue that it can be made its own project and moved to nixpkgs to avoid building it 😄 Either way, I'm fine either way as long as it works.