feat(docs): WIP - quarto-generated documentation site

[lukeroantreeONS]

📌 Quarto-generated Documentation for the package

✨ Summary

DRAFT

This PR uses Quarto and Quartodoc to build a documentation website for the package, based on the package docstrings, as well as the markdown and notebook files.

📜 Changes Introduced

• feat: quarto-generated documentation site (overall)
• feat: sidebar with sections for different components, and the demos
• fix: make it consistently direct to the landing page (index.qmd) on opening
• chore: make sidebar collapsed by default
• ci: integrate into CICD pipeline, make / update github.io site

✅ Checklist

Please confirm you've completed these checks before requesting a review.

• Code passes linting with Ruff
• Security checks pass using Bandit
• API and Unit tests are written and pass using pytest
• Terraform files (if applicable) follow best practices and have been validated (terraform fmt & terraform validate)
• DocStrings follow Google-style and are added as per Pylint recommendations
• Documentation has been updated if needed

🔍 How to Test

1. Install Quarto locally.
2. Run uv sync to get the additional packages required
3. Run quartodoc build
4. Run quarto preview to render & locally host the documentation site