Select TravelMode When Direction request

[joumduk]

Use case

I want to provide transit route (such as bus, subway route ) for user.
but, The plugin is not supported select TravelMode for direction

Proposal

AddDirection function will be can add with TravelMode like option.
and provide route of this TravelMode

`
@OverRide
void addDirection(dynamic origin, dynamic destination,
{String startLabel,
String startIcon,
String startInfo,
String endLabel,
String endIcon,
String endInfo,
TravelMode mode}) {
assert(() {
if (origin == null) {
throw ArgumentError.notNull('origin');
}

  if (destination == null) {
    throw ArgumentError.notNull('destination');
  }

  return true;
}());
if (mode == null) {
  mode = TravelMode.DRIVING;
}

_directions.putIfAbsent(
  '${origin}_$destination',
  () {
    DirectionsRenderer direction = DirectionsRenderer(
        DirectionsRendererOptions()..suppressMarkers = true);
    direction.map = _map;
    final transitMode = TransitOptions();
    transitMode.modes = [
      TransitMode.RAIL,
      TransitMode.SUBWAY,
      TransitMode.TRAIN
    ];
    final request = DirectionsRequest()
      ..origin = origin is GeoCoord
          ? LatLng(origin.latitude, origin.longitude)
          : origin
      ..destination =
          destination is GeoCoord ? destination.toLatLng() : destination
      ..travelMode = mode;
    if (mode == TravelMode.TRANSIT) {
      request..transitOptions = transitMode;
    }
    directionsService.route(
      request,
      (response, status) {
        if (status == DirectionsStatus.OK) {
          direction.directions = response;
          final leg = response?.routes?.firstOrNull?.legs?.firstOrNull;

          final startLatLng = leg?.startLocation;
          if (startLatLng != null) {
            if (startIcon != null ||
                startInfo != null ||
                startLabel != null) {
              addMarkerRaw(
                startLatLng.toGeoCoord(),
                icon: startIcon,
                info: startInfo ?? leg.startAddress,
                label: startLabel,
              );
            } else {
              addMarkerRaw(
                startLatLng.toGeoCoord(),
                icon: 'assets/images/marker_a.png',
                info: leg.startAddress,
              );
            }
          }

          final endLatLng = leg?.endLocation;
          if (endLatLng != null) {
            if (endIcon != null || endInfo != null || endLabel != null) {
              addMarkerRaw(
                endLatLng.toGeoCoord(),
                icon: endIcon,
                info: endInfo ?? leg.endAddress,
                label: endLabel,
              );
            } else {
              addMarkerRaw(
                endLatLng.toGeoCoord(),
                icon: 'assets/images/marker_b.png',
                info: leg.endAddress,
              );
            }
          }
        }
      },
    );

    return direction;
  },
);`

[AhmedAlbashaDev]

Hello
any solutions to this problem