feat: classify ways tagged with surface=cement as surface type "Con…

…crete"

According to OSM wiki `surface=cement` is often used, by mistake, instead of `surface=concrete`.

ors-engine/src/main/java/org/heigit/ors/routing/graphhopper/extensions/SurfaceType.java

@@ -61,7 +61,7 @@ public static SurfaceType getFromString(String surface) {
  case "paved" -> SurfaceType.PAVED;
  case "unpaved", "woodchips", "rock", "rocks", "stone", "shells", "salt" -> SurfaceType.UNPAVED;
  case "asphalt", "chipseal", "bitmac", "tarmac" -> SurfaceType.ASPHALT;
- case "concrete" -> SurfaceType.CONCRETE;
+ case "concrete", "cement" -> SurfaceType.CONCRETE;
  case "paving_stones", "paved_stones", "sett", "cobblestone", "unhewn_cobblestone", "bricks", "brick" -> SurfaceType.PAVING_STONE;
  case "metal" -> SurfaceType.METAL;
  case "wood" -> SurfaceType.WOOD;