Better editor experience

[patrick91]

We should see if we can reuse this: https://sandpack.codesandbox.io/

It seems to be mostly for javascript usecases, if I understood correctly it uses a bundler for running the code (https://sandpack.codesandbox.io/docs/advanced-usage/client#hosting-the-bundler), so maybe we can write our own that runs pyodide (and our custom django code).

Definitely worth seeing how long it would take do this :)

Otherwise can build our own UI 😊

[patrick91]

https://github.com/codesandbox/sandpack-bundler