initial rod app

lib/widgets/base_layer_widget.dart

@@ -0,0 +1,17 @@
+import 'package:flutter/material.dart';
+import 'package:flutter_map/flutter_map.dart';
+
+class BaseLayer extends StatelessWidget {
+  const BaseLayer({Key? key}) : super(key: key);
+
+  @override
+  Widget build(BuildContext context) {
+    return TileLayerWidget(
+      options: TileLayerOptions(
+        backgroundColor: Colors.transparent,
+        urlTemplate: 'https://{s}.tile.openstreetmap.org/{z}/{x}/{y}.png',
+        subdomains: ['a', 'b', 'c'],
+      ),
+    );
+  }
+}