Gets a map image. If no custom map image is present, the thumbnail is returned. If no thumbnail is found, a 404 image is shown. This is a safe method that always returns an image.
https://tm.mania.exchange/mapimage/{mapId}/{position?} // TM2.MX
https://trackmania.exchange/mapimage/{mapId}/{position?} // TMX
https://sm.mania.exchange/mapimage/{mapId}/{position?} // SMX