Multiple predefined views in interactive-figure viewer

[pkgw]

The aas-timeseries tool has a feature where you can save multiple predefined views of the same data set, which is helpful for walking people through different areas of interest in a dataset.

Our interactive-figure viewer should support the same functionality, ideally with a similar (if not identical) API.

At the moment I don't think we want to support changing from one WWT viewer mode (Sky vs 3D vs Panorama) to another, but maybe there are use cases for that.

Here's a first-cut list of the things that might vary from one view to another, if we limit ourselves to thinking about Sky mode:

• [ ] Zoom level
• [ ] Position on sky
• [ ] Current time
• [ ] Camera rotation
• [ ] Visibility of various data layers

That last one might be tricky to implement? If so, it feels expendable to me.