feat: Integrate window manager for desktop windowing support and enhance input handling

Signed-off-by: Hans Kokx <hans.d.kokx@gmail.com>

apps/wolf_3d_gui/lib/main.dart

@@ -4,7 +4,9 @@
 /// before presenting the game-selection flow.
 library;
 
+import 'package:flutter/foundation.dart';
 import 'package:flutter/material.dart';
+import 'package:window_manager/window_manager.dart';
 import 'package:wolf_3d_flutter/wolf_3d_flutter.dart';
 import 'package:wolf_3d_gui/screens/game_screen.dart';
 
@@ -12,6 +14,10 @@ import 'package:wolf_3d_gui/screens/game_screen.dart';
 void main() async {
   WidgetsFlutterBinding.ensureInitialized();
 
+  if (_supportsDesktopWindowing) {
+    await windowManager.ensureInitialized();
+  }
+
   final Wolf3d wolf3d = await Wolf3d().init();
 
   runApp(
@@ -23,6 +29,19 @@ void main() async {
   );
 }
 
+bool get _supportsDesktopWindowing {
+  if (kIsWeb) {
+    return false;
+  }
+
+  return switch (defaultTargetPlatform) {
+    TargetPlatform.linux ||
+    TargetPlatform.windows ||
+    TargetPlatform.macOS => true,
+    _ => false,
+  };
+}
+
 class _NoGameDataScreen extends StatelessWidget {
   const _NoGameDataScreen();