ENH: Add support for heatmap MapBox layers #3110
Description
In a forum post a user asked if there is a way to create heatmap-style plots on a map. e.g.
It looks like MapBox supports a heatmap layer that would support this (See https://www.mapbox.com/mapbox-gl-js/example/heatmap-layer/), so it would be nice to add support for this layer type in the future.