docs: add athuv as a contributor for code, and ideas

[allcontributors[bot]]

Adds @athuv as a contributor for code, ideas.

This was requested by vnugent in this comment

[skip ci]

[vercel[bot]]

The latest updates on your projects. Learn more about Vercel for Git ↗︎

1 Ignored Deployment

| Name | Status | Preview | Updated (UTC) | | :--- | :----- | :------ | :------ | | **open-tacos** | ⬜️ Ignored ([Inspect](https://vercel.com/openbeta-dev/open-tacos/28pWvnV3c76BhVXm31tswtSp1sZJ)) | [Visit Preview](https://open-tacos-git-all-contributors-add-athuv-openbeta-dev.vercel.app) | Feb 11, 2024 7:10pm |