Cycling map - show cycling venues

[Tsurha]

With a worldwide look, the cycling map would greatly benefit from emphasizing cycling venues. These are pumptracks / velodromes / BMX courses / obstacle courses. OSM details are in https://wiki.openstreetmap.org/wiki/Tag:sport%3Dcycling

Supported tags should be:

• sport=cycling, with:
• leisure=track : for a line. Line color on the map can be according the cycling paths Legend.
• leisure=stadium : for an area. The area can be colored like any playground, but with a cycling icon instead of a basketball.