docs: add initial Jupyter Book documentation scaffold

[yukthagangadhari5]

Describe your changes

This PR introduces an initial Jupyter Book scaffold to structure project documentation.

Specifically, it adds:

_config.yml for Jupyter Book configuration

_toc.yml to define documentation structure

index.md as the documentation landing page

quickstart.md with a minimal usage example for metrics

The goal is to establish a foundation for structured documentation generation, aligned with the discussion in Issue #61 regarding automated documentation workflows.

This PR does not modify existing source code.

Issue Link

Related to #61

Type of change

🐛 Bug fix

✨ New feature

💥 Breaking change

📖 Documentation

Checklist before requesting a review

My branch is up-to-date with the target branch

I have performed a self-review of my changes

I have updated the README (not required for this scaffold PR)

I have added tests (not applicable – documentation change)

You do NOT need to fill reviewer/assignee checklist — that’s for maintainers.

[sadamov]

please add your input to this PR instead: #196 edit: #272 and #252

[yukthagangadhari5]

Hi! I had opened PR #322 proposing a small Jupyter Book documentation scaffold (index, quickstart, config, toc), but it was closed with the suggestion to contribute here instead.

I'd be happy to integrate those changes into this PR if they are useful. The goal was mainly to provide a minimal Quickstart page and documentation structure aligned with the Jupyter Book direction discussed in Issue #61.

Please let me know if you'd like me to adapt the changes to match the structure in this PR.

[joeloskarsson]

I think we are trying to focus these efforts on PRs #252 and #272 now. Please discuss and try to contribute there.