Adds drone model, db helper.

lib/models/drone.dart

@@ -0,0 +1,24 @@
+import 'package:image/image.dart' as img;
+
+class Drone
+{
+    final int? id;
+    final String name;
+    //final img.Image image;
+
+    Drone ({this.id, required this.name});  //required this.image});
+
+    factory Drone.fromMap(Map<String, dynamic> map) => Drone
+    (
+        id: map["id"],
+        name: map["name"],
+        //image: img.decodeJpg(map["image"])!,
+    );
+
+    Map<String, dynamic> toMap() =>
+    {
+        "id": id,
+        "name": name,
+        //"image": img.encodeJpg(image),
+    };
+}