Incorporate Bookworm-app

[bmschmidt]

The old line chart GUI was written in coffeescript almost a decade ago. I just put up a svelte-based app that does pretty much the same thing at https://github.com/Bookworm-project/bookworm-app. It's not complete, but it's almost good enough for testing. demo at [https://movies.benschmidt.org].

The only issue is that the default query is baked into the source code. Instead, there should
be some way for bin/run bookworm to dump a (tiny) json file that lists the bookworms on the server or something,
and/or allows user configurable queries.