[routing] Avoid paved roads

Signed-off-by: x7z4w <x7z4w@noreply.codeberg.org>

libs/routing/routing_options.hpp

@@ -19,8 +19,9 @@ public:
     Ferry = 1u << 3,
     Dirty = 1u << 4,
     Steps = 1u << 5,
+    Paved = 1u << 6,
 
-    Max = (1u << 5) + 1
+    Max = (1u << 6) + 1
   };
 
   using RoadType = std::underlying_type_t<Road>;