feat(departures): add direction info to departures

lib/transport_helper.dart

@@ -780,6 +780,7 @@ class Departure {
 
   int? id;
   String ref;
+  String direction;
   String vehicleId;
   String vehicleName;
   String stationId;
@@ -790,6 +791,7 @@ class Departure {
   Departure({
     this.id,
     required this.ref,
+    required this.direction,
     required this.vehicleId,
     required this.vehicleName,
     required this.stationId,
@@ -802,6 +804,7 @@ class Departure {
     return {
       "id": id,
       "ref": ref,
+      "direction": direction,
       "vehicle": vehicleId,
       "vehiclename": vehicleName,
       "station": stationId,
@@ -815,6 +818,7 @@ class Departure {
     return Departure(
       id: map["id"] as int,
       ref: map["ref"] as String,
+      direction: map["direction"] as String,
       vehicleId: map["vehicle"] as String,
       vehicleName: map["vehiclename"] as String,
       stationId: map["station"] as String,
@@ -869,6 +873,9 @@ class Departure {
       // ["JourneyDetailRef"]["ref"] cannot be caught if ["JourneyDetailRef"]
       // is non-existent
       ref: json["ref"] ?? json["JourneyDetailRef"]["ref"] as String,
+      direction:
+          json["direction"] ??
+          json["Directions"]["Direction"][0]["value"], // this is not healthy
       vehicleId: vehicle.id,
       vehicleName: vehicle.name,
       stationId: station.id,