Use loglevel

[keller-mark]

Fixes #1433

Only thing i am not sure about is how to set the log level from the console like DeckGL allows. It would probably require setting a global on window which kind of goes against #1401. Also kind of related to #1436 if such a global would allow accessing the current/original config(s) for any Vitessce components on the page

TODO

• Add info about usage of loglevel to README or Docs for both internal developers (not to contribute PRs containing console calls but rather to use loglevel) and consumers of the vitessce package (with example of how to set the log level in the consumer app)

Checklist

• Ensure PR works with all demos on the dev.vitessce.io homepage
• Open (draft) PR's into vitessce-python and vitessce-r if this is a release PR
• Documentation added or updated