infra: Make Avalonia the default UI (#6375)

* misc: Move Ryujinx project to Ryujinx.Gtk3

This breaks release CI for now but that's fine.

Signed-off-by: Mary Guillemard <mary@mary.zone>

* misc: Move Ryujinx.Ava project to Ryujinx

This breaks CI for now, but it's fine.

Signed-off-by: Mary Guillemard <mary@mary.zone>

* infra: Make Avalonia the default UI

Should fix CI after the previous changes.

GTK3 isn't build by the release job anymore, only by PR CI.

This also ensure that the test-ava update package is still generated to
allow update from the old testing channel.

Signed-off-by: Mary Guillemard <mary@mary.zone>

* Fix missing copy in create_app_bundle.sh

Signed-off-by: Mary Guillemard <mary@mary.zone>

* Fix syntax error

Signed-off-by: Mary Guillemard <mary@mary.zone>

---------

Signed-off-by: Mary Guillemard <mary@mary.zone>

src/Ryujinx/UI/Views/Settings/SettingsHotkeysView.axaml.cs

@@ -0,0 +1,81 @@
+using Avalonia.Controls;
+using Avalonia.Controls.Primitives;
+using Avalonia.Input;
+using Avalonia.Interactivity;
+using Ryujinx.Ava.Input;
+using Ryujinx.Ava.UI.Helpers;
+using Ryujinx.Input;
+using Ryujinx.Input.Assigner;
+
+namespace Ryujinx.Ava.UI.Views.Settings
+{
+    public partial class SettingsHotkeysView : UserControl
+    {
+        private ButtonKeyAssigner _currentAssigner;
+        private readonly IGamepadDriver _avaloniaKeyboardDriver;
+
+        public SettingsHotkeysView()
+        {
+            InitializeComponent();
+            _avaloniaKeyboardDriver = new AvaloniaKeyboardDriver(this);
+        }
+
+        private void MouseClick(object sender, PointerPressedEventArgs e)
+        {
+            bool shouldUnbind = e.GetCurrentPoint(this).Properties.IsMiddleButtonPressed;
+
+            _currentAssigner?.Cancel(shouldUnbind);
+
+            PointerPressed -= MouseClick;
+        }
+
+        private void Button_Checked(object sender, RoutedEventArgs e)
+        {
+            if (sender is ToggleButton button)
+            {
+                if (_currentAssigner != null && button == _currentAssigner.ToggledButton)
+                {
+                    return;
+                }
+
+                if (_currentAssigner == null && button.IsChecked != null && (bool)button.IsChecked)
+                {
+                    _currentAssigner = new ButtonKeyAssigner(button);
+
+                    this.Focus(NavigationMethod.Pointer);
+
+                    PointerPressed += MouseClick;
+
+                    var keyboard = (IKeyboard)_avaloniaKeyboardDriver.GetGamepad(_avaloniaKeyboardDriver.GamepadsIds[0]);
+                    IButtonAssigner assigner = new KeyboardKeyAssigner(keyboard);
+
+                    _currentAssigner.GetInputAndAssign(assigner);
+                }
+                else
+                {
+                    if (_currentAssigner != null)
+                    {
+                        ToggleButton oldButton = _currentAssigner.ToggledButton;
+
+                        _currentAssigner.Cancel();
+                        _currentAssigner = null;
+
+                        button.IsChecked = false;
+                    }
+                }
+            }
+        }
+
+        private void Button_Unchecked(object sender, RoutedEventArgs e)
+        {
+            _currentAssigner?.Cancel();
+            _currentAssigner = null;
+        }
+
+        public void Dispose()
+        {
+            _currentAssigner?.Cancel();
+            _currentAssigner = null;
+        }
+    }
+}