Auth for Jupyter Notebooks

[aedm]

Related

Related to https://linear.app/rerun/issue/RR-2861/authentication-in-jupyter-notebooks

What

Implements authentication in Jupyter notebooks.

• By running rr.login() the user can log in.
• Uses re_auth module, starts a web server in the background to listen to events.
• Automatically passes credentials to the wasm viewer.

[github-actions]

Web viewer built successfully.

Result	Commit	Link	Manifest
✅	f3a8408	https://rerun.io/viewer/pr/11855	+nightly +main

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[github-actions]

Latest documentation preview deployed successfully.

Result	Commit	Link
✅	f3a8408	https://landing-aoqld0nm3-rerun.vercel.app/docs

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[jprochazk]

Overall, nice work!

I'm not totally sure about the refresh mechanism.

The refresh token may only be used once. There is no coordination between different Viewer instances on which one should refresh the credentials. So if the access token expires, and all the Viewers are using it, they will all try to refresh simultaneously (though serialized due to single-threaded nature of JS/Wasm).

I believe the kernel should be refreshing the credentials before constructing any Viewer. And the Viewers should only receive the access token, not a refresh token, so that they don't try to refresh credentials.

[aedm]

I believe the kernel should be refreshing the credentials before constructing any Viewer. And the Viewers should only receive the access token, not a refresh token, so that they don't try to refresh credentials.

That makes sense. Good idea! :)

[jprochazk]

Nice! A few more nitpicks. Please also fix the lints before you merge.