Fix project structure

flutter-scene-spike/test/configuration_test.dart

@@ -0,0 +1,8 @@
+import 'package:flutter_test/flutter_test.dart';
+import 'package:flutter_scene_spike/main.dart';
+
+void main() {
+  test('uses the expected spike label', () {
+    expect(spikeTitle, 'FLUTTER SCENE CARD SPIKE');
+  });
+}