290 document creating custom atoms on the site

[deemp]

• closes #290
• closes https://github.com/objectionary/normalizer/issues/469

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PR-Codex overview

This PR introduces changes related to running tests, updating markdown files, adding yq-go package, and refining the Atoms module.

Detailed summary

• Added test commands in contributing.md
• Updated markdown files in site/docs/src
• Included yq-go package in .nix file
• Modified Atoms module in eo-phi-normalizer
• Adjusted file paths in scripts/update-markdown.sh

The following files were skipped due to too many changes: eo-phi-normalizer/src/Language/EO/Phi/Dataize/Atoms.hs, site/docs/src/normalizer/transform.md, eo-phi-normalizer/src/Language/EO/Phi/Dataize.hs, site/docs/src/normalizer/dataize.md

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[0crat]

@deemp Thank you for your contribution! We appreciate your efforts, but there are some areas for improvement. You've earned +5 points: +20 as a base, -7 for exceeding 200 hits-of-code (1219), -15 for surpassing 800 hits-of-code, and -10 for lack of reviewer comments. We encourage you to focus on smaller, more manageable contributions and engage with reviewers for better code quality. Your current balance is +172. Keep up the good work, and we look forward to your future contributions!

[0crat]

@fizruk Great job on the review! 🎉 You've earned 24 points for this substantial contribution: +15 base points, +30 (capped from +24.38) for reviewing 1219 hits-of-code, -15 for no comments, and -6 to meet the minimum 5-point threshold. Remember, engaging with comments can boost your rewards next time! Your running balance is now +285. Keep up the excellent work! 💪