Builds out a developer documentation section in the docs
- Links it from contributing.md
- Adds an initial guide on how to contribute an integration
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Co-authored-by: Bagatur <baskaryan@gmail.com>
Switches to a more maintained solution for building ipynb -> md files
(`quarto`)
Also bumps us down to python3.8 because it's significantly faster in the
vercel build step. Uses default openssl version instead of upgrading as
well.
