Add Windows runner files for high DPI support and console output

- Created runner.exe.manifest to enable DPI awareness and dark mode support.
- Implemented utility functions in utils.cpp and utils.h for console creation and command line argument handling.
- Developed Win32Window class in win32_window.cpp and win32_window.h to manage high DPI-aware windows, including theme updates and message handling.

lib/widgets/app_title_bar_stub.dart

@@ -0,0 +1,10 @@
+import 'package:flutter/material.dart';
+
+class AppTitleBar extends StatelessWidget {
+  const AppTitleBar({super.key});
+
+  @override
+  Widget build(BuildContext context) {
+    return const SizedBox.shrink();
+  }
+}