Support 3D tiles and layers

**Is your feature request related to a problem? Please describe.**
I'd like to create 3D views.

**Describe the solution you'd like**
Maybe a plugin like eegeo.js? Or https://www.maptiler.com/news/2014/07/webgl-earth-2-the-leaflet-compatible-javascript-3d-globe-powered-by-cesium/

**Implementation**
folium is maintained by volunteers. Can you help make a PR if we want to implement this feature?
