Change all napari notebooks to use nbscreenshot

[bvarjavand]

The current notebooks are a sad shadow of when they are running, mostly because none of the napari interactivity is there. I suggest everyone with a notebook using napari to implement the recent nbscreenshot feature to embed images of the viewer in notebooks. See example below.

https://gist.github.com/GenevieveBuckley/97b49f9ac3e02422f98abe3c412ee2a0

[github-actions[bot]]

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