Keep all documentation in typedoc

[johngeorgewright]

It seems possible to keep all documentation inside typedoc without the need of Jekyll.

See https://github.com/KnodesCommunity/typedoc-plugins/tree/main/packages/plugin-pages

This would mean the developer & CI environment doesn't require installation of ruby as well as Node & Yarn. It may also make the documentation look a little less separated from the API.

[johngeorgewright]

I played with this project a little, but without a lot of work the documentation became a little confusing to browse.