Change line colour based on speed

[nmatton]

Is your feature request related to a problem? Please describe.
It could be nice to have the color of the line that changes according to the speed on the position of the track. From blue (slow) to red (fast)

Describe the solution you'd like
here is an example of what could be implemented
https://docs.mapbox.com/mapbox-gl-js/example/data-driven-lines/

Describe alternatives you've considered
Main alternative is to not develop this feature :D It is not clear if it will give a good rendering