add documentation info to context 7

[RustoMCSpit]

https://context7.com/

[kmturley]

Looks interesting, we should probably add this.

Context7 parses documentation files — .md, .mdx, .markdown, .rst, .txt, and .ipynb — and extracts the code examples and explanations they contain. Raw source code files (.py, .ts, .go, and so on) are not indexed when documentation is present; a library’s docs are expected to show the important usage examples.
https://context7.com/docs/adding-libraries#what-gets-indexed

Perhaps before adding, will need to better generate documentation for the registry.
I've seen some Claude skills or libraries for generating documentation, might need to do that first to generate a ./docs folder.
Then apply this to index it for AGENTS