3D fences

[AlexValue]

I want to propose an idea for a new display of fences on the map. They can be drawn in 3D (like buildings). I have attached a screenshot with an example. This would make it easier for new users to navigate and overall make the map prettier.

I would also like to have 2 display options: a regular fence and a low fence. By low fence I mean fences that can be stepped over (below 90 centimeters). Of course, if opportunities allow OpenStreetMaps.

[pastk]

It had been suggested before in #2275 and #1469