Centralize API fetches (don't need to always specify backend URL)
Add mock data to api fetches.
Add dropdown for SASL config.
Try to keep data view from rapidly resizing.
Toying with error display in top-right corner (tentative)
Rename package.
Slightly better WebSocket error handling.
Less hacky than the backend stuff, but not by too much.
Can request and display one-shot/real-time data.
Can fetch current clusters/topics from the backend.
Can (barely) configure a new cluster for the backend to use.
A lot of boilerplate from sveltekit is still kicking around.