fix(transport_helper): add some entries to match vehicleType codes

lib/transport_helper.dart

@@ -713,6 +713,9 @@ class Line {
     VehicleType.subway,
     VehicleType.PLACEHOLDER,
     VehicleType.bus,
+    VehicleType.PLACEHOLDER,
+    VehicleType.PLACEHOLDER,
+    VehicleType.regionalTrain,
   ];
 
   factory Line.fromJson(Map<String, dynamic> json) => Line(