llms.txt access

[cmdcolin]

I started a PR here for jbrowse to try to make an llms.txt file. This could help avoid requests to raw github pages for the docs.

I don't know exactly what the best doc pages to include are but this could be a start. I read that llms.txt is fairly short 'navigation' overview of most websites, and llms-full.txt is kind of everything, but potentially another one could be made specifically for the chatbot

GMOD/jbrowse-components#5145