INFRA: Set Up Project.

lib/widget/osm_map/place_model.dart

@@ -0,0 +1,21 @@
+import 'package:latlong2/latlong.dart';
+
+class PlaceModel {
+  final LatLng coordinates;
+  final String address;
+
+  PlaceModel({required this.coordinates, required this.address});
+
+  factory PlaceModel.fromJson(Map<String, dynamic> json) {
+    return PlaceModel(coordinates: LatLng(json['lat'], json['lng']), address: json['address']);
+  }
+
+  Map<String, dynamic> toJson() {
+    return {'lat': coordinates.latitude, 'lng': coordinates.longitude, 'address': address};
+  }
+
+  @override
+  String toString() {
+    return 'Place(lat: ${coordinates.latitude}, lng: ${coordinates.longitude}, address: $address)';
+  }
+}