serve SvelteKit app on quarkus w/ quinoa

[tohuwabohu-io]

Is your feature request related to a problem? Please describe. Currently I build and deploy two different packages resulting in four machines total running on fly. This has several implications. When suspended

• node server bff needs to wake up before processing a request which takes ~300ms
• quarkus needs to wake up before handling requests received from node server which takes ~300ms + some time as the JVM image is being used (see #75 for improvement)
• overall it takes too long.

Also from a cost perspective, I run and maintain not one but two services and the setup is overkill for such a small application.

Describe the solution you'd like Add the quarkus quinoa plugin: https://docs.quarkiverse.io/quarkus-quinoa/dev/index.html

• don't change how the codebase is structured. The setup works fine for local development
• during build, the bundled webapp should be put into the WEB-INF/ folder and served from there
• in the end there should be just one image built and deployed instead of two

[tohuwabohu-io]

I had to refactor librefit-web back into a SPA to make it work. On the positive side, the code is much easier to understand now.