we can probably get this working in collab

[kushalkolar]

@manzt figured this out at scipy!

Logging this here to work on when I have time.

Basically:

1. collab-specific metadata has to be returned by _repr_mimebundle,
2. publish jupyter-rfb to npm so collab can find it, because collab doesn't use local js. Outline of a CI action to do this:

      - uses: actions/setup-python@v4
        with:
          python-version: "3.x"
      - run: |
          python -m pip install --upgrade pip
          pip install build twine
          python -m build
          twine upload dist/*

      - uses: actions/setup-node
        with:
          node-version: 18
        run: |
          cd js
          npm publish

[kushalkolar]

I attempted this in #77 , tl;dr: performance is very poor, not worth it.