Automatically generate documentation file using tsdoc

[fpapado]

Microsoft has tsdoc, which allows extracting comments from the source. It is built with TypeScript in mind.

I'd love a future where we can pull out the documentation and put it into a markdown file.

Potential next steps

• Try out tsdoc, and parse the files, starting at the index
• Generate a markdown document for it. There might be a library to do this, but it might also be a script in this repository
• Integrate a build-docs step in the package.json

[ArtemKolichenkov]

I can take it :)