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.

windows/flutter/generated_plugin_registrant.cc

@@ -0,0 +1,29 @@
+//
+//  Generated file. Do not edit.
+//
+
+// clang-format off
+
+#include "generated_plugin_registrant.h"
+
+#include <geolocator_windows/geolocator_windows.h>
+#include <nsd_windows/nsd_windows_plugin_c_api.h>
+#include <objectbox_flutter_libs/objectbox_flutter_libs_plugin.h>
+#include <permission_handler_windows/permission_handler_windows_plugin.h>
+#include <share_plus/share_plus_windows_plugin_c_api.h>
+#include <url_launcher_windows/url_launcher_windows.h>
+
+void RegisterPlugins(flutter::PluginRegistry* registry) {
+  GeolocatorWindowsRegisterWithRegistrar(
+      registry->GetRegistrarForPlugin("GeolocatorWindows"));
+  NsdWindowsPluginCApiRegisterWithRegistrar(
+      registry->GetRegistrarForPlugin("NsdWindowsPluginCApi"));
+  ObjectboxFlutterLibsPluginRegisterWithRegistrar(
+      registry->GetRegistrarForPlugin("ObjectboxFlutterLibsPlugin"));
+  PermissionHandlerWindowsPluginRegisterWithRegistrar(
+      registry->GetRegistrarForPlugin("PermissionHandlerWindowsPlugin"));
+  SharePlusWindowsPluginCApiRegisterWithRegistrar(
+      registry->GetRegistrarForPlugin("SharePlusWindowsPluginCApi"));
+  UrlLauncherWindowsRegisterWithRegistrar(
+      registry->GetRegistrarForPlugin("UrlLauncherWindows"));
+}