Modify readthedocs to be "Recipes-first"

[brendanreardon]

Feature description

Our ReadtheDocs should enable new users to quickly generate their own Categorical Variant objects based on a Recipe that is helpful to them, without needing to read lots of documentation.

It should begin with simple use cases of common genomic variant representation, and direct users for how to create and validate Cat-VRS objects for those use cases. These should be Recipe-first in their approach. To that end, outputs would be to have a Quick Start for:

• Canonical Alleles
• Protein Sequence Consequences
• Categorical Copy Number alterations
• Gene Fusions

Bonus points:

• Individual cat-vrs-python notebooks to guide users along each "path" on the flow chart
• Creating the flow chart(s) with DrawIO's VSCode extension. Thank you, @korikuzma !

This was originally posted as a Hackathon idea for the 2026 Connect Hackathon

Contribution

Yes, I can create a PR for this feature.