Add startup flag to remove title bar in Linux and Windows

Author: lkcv

lib/models/settings/arguments_model.dart

@@ -11,6 +11,7 @@ abstract class ArgumentsModel with _$ArgumentsModel {
 
   factory ArgumentsModel({
     @Default(false) bool htpcMode,
+    @Default(false) bool noTitleBar,
     @Default(false) bool leanBackMode,
     @Default(false) bool newWindow,
   }) = _ArgumentsModel;
@@ -21,6 +22,7 @@ abstract class ArgumentsModel with _$ArgumentsModel {
     final parsedWindowArgs = windowArguments.split(',');
     return ArgumentsModel(
       htpcMode: arguments.contains('--htpc') || leanBackEnabled,
+      noTitleBar: arguments.contains('--no-titlebar'),
       leanBackMode: leanBackEnabled,
       newWindow: parsedWindowArgs.contains('--newWindow'),
     );

lib/models/settings/arguments_model.freezed.dart

@@ -22,6 +22,12 @@ List<Widget> buildClientSettingsVisual(
   TextEditingController libraryPageSizeController,
 ) {
   final clientSettings = ref.watch(clientSettingsProvider);
+
+  final platform = AdaptiveLayout.of(context).platform;
+  final supportsWindowControls =
+      platform == TargetPlatform.windows ||
+      platform == TargetPlatform.linux;
+      
   Locale currentLocale = WidgetsBinding.instance.platformDispatcher.locale;
   return settingsListGroup(
     context,