Add shortwave recipe

[haecker-felix]

Checklist

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[conda-forge-admin]

Hi! This is the friendly automated conda-forge-linting service.

I wanted to let you know that I linted all conda-recipes in your PR (recipes/shortwave/recipe.yaml) and found some lint.

Here's what I've got...

For recipes/shortwave/recipe.yaml:

• ❌ Rust packages must include the licenses of the Rust dependencies. For more info, visit: https://conda-forge.org/docs/maintainer/adding_pkgs/#rust

_{This message was generated by GitHub Actions workflow run https://github.com/conda-forge/conda-forge-webservices/actions/runs/22262770665. Examine the logs at this URL for more detail.}

[github-actions]

Hi! This is the staged-recipes linter and your PR looks excellent! 🚀

[conda-forge-admin]

Hi! This is the friendly automated conda-forge-linting service.

I just wanted to let you know that I linted all conda-recipes in your PR (recipes/shortwave/recipe.yaml) and found it was in an excellent condition.