Explore options to add interactive figures

[Peter9192]

It would be really nice if we could add interactive figures. I'm not sure if this plays well together with the content library, so it would be good to explore what would be the most effective way to do this.

This might be a nice example to start with:
https://vega.github.io/vega-lite/examples/interactive_global_development.html

[Peter9192]

Here's a few options:

• Add standalone HTML files as an alternative to images; embed as iframe (this already works)
• Add custom components to embed e.g. vega-lite specs with vega-embed
• Hook up with a bokeh/dash/whatever server to show their content