feat: Implement Windows runner for Flutter application

- Added FlutterWindow class to manage the Flutter view within a Win32 window.
- Created main entry point in main.cpp to initialize and run the Flutter application.
- Implemented utility functions for console attachment and command line argument parsing.
- Added resource management for application icon and manifest.
- Enhanced Win32Window class for DPI awareness and theme management.
- Included necessary headers and resource files for building the Windows runner.

test/widget_test.dart

@@ -0,0 +1,25 @@
+// This is a basic Flutter widget test.
+//
+// To perform an interaction with a widget in your test, use the WidgetTester
+// utility in the flutter_test package. For example, you can send tap and scroll
+// gestures. You can also use WidgetTester to find child widgets in the widget
+// tree, read text, and verify that the values of widget properties are correct.
+
+import 'package:flutter_test/flutter_test.dart';
+
+import 'package:meshcore_sar_app/main.dart';
+
+void main() {
+  testWidgets('App launches smoke test', (WidgetTester tester) async {
+    // Build our app and trigger a frame.
+    await tester.pumpWidget(const MeshCoreSarApp());
+
+    // Verify that our app title appears.
+    expect(find.text('MeshCore SAR'), findsOneWidget);
+
+    // Verify the tab bar appears with tabs
+    expect(find.text('Messages'), findsOneWidget);
+    expect(find.text('Contacts'), findsOneWidget);
+    expect(find.text('Map'), findsOneWidget);
+  });
+}