Generate API Documentation Via TypeDoc

[backlineint]

Package

Not package-specific

Describe the feature request

While reviewing #787 I noticed that much of the reference section in the docs is hand authored, including copying and pasting essentially what is code from the codebase. This is very labor intensive and will prove difficult to maintain.

I've had success using TypeDoc for this on other projects and converting it to markdown using typedoc plugin markdown for inclusion in docs.

This will require the inline comments in the codebase to be improved (or in many cases added) but that is good for the health of the codebase in general.

Describe the solution you'd like

• Add TSDoc comments to the next-drupal package in packages/next-drupal
• Add the typedoc-plugin-markdown npm package as a dependency to the application in www
• In the www app, configure typedoc-plugin-markdown to generate API documentation in the directory www/content/api based on the next-drupal package.