WIP map: De-duplicate lanes on layered MAPEMs

TODO: Actually implement it

src/applogic/v2x/map.rs

@@ -138,6 +138,8 @@ impl Intersection {
             self.signal_groups = Self::collect_signal_groups(&self.lanes);
             self.center = Self::calculate_center(&self.ref_point, &self.lanes);
             self.is_complete = true;
+
+            // TODO: de-duplicate lanes!
         }
     }