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/Input/AvaloniaKeyboardDriver.cs

@@ -0,0 +1,107 @@
+using Avalonia.Controls;
+using Avalonia.Input;
+using Ryujinx.Ava.Common.Locale;
+using Ryujinx.Input;
+using System;
+using System.Collections.Generic;
+using AvaKey = Avalonia.Input.Key;
+using Key = Ryujinx.Input.Key;
+
+namespace Ryujinx.Ava.Input
+{
+    internal class AvaloniaKeyboardDriver : IGamepadDriver
+    {
+        private static readonly string[] _keyboardIdentifers = new string[1] { "0" };
+        private readonly Control _control;
+        private readonly HashSet<AvaKey> _pressedKeys;
+
+        public event EventHandler<KeyEventArgs> KeyPressed;
+        public event EventHandler<KeyEventArgs> KeyRelease;
+        public event EventHandler<string> TextInput;
+
+        public string DriverName => "AvaloniaKeyboardDriver";
+        public ReadOnlySpan<string> GamepadsIds => _keyboardIdentifers;
+
+        public AvaloniaKeyboardDriver(Control control)
+        {
+            _control = control;
+            _pressedKeys = new HashSet<AvaKey>();
+
+            _control.KeyDown += OnKeyPress;
+            _control.KeyUp += OnKeyRelease;
+            _control.TextInput += Control_TextInput;
+        }
+
+        private void Control_TextInput(object sender, TextInputEventArgs e)
+        {
+            TextInput?.Invoke(this, e.Text);
+        }
+
+        public event Action<string> OnGamepadConnected
+        {
+            add { }
+            remove { }
+        }
+
+        public event Action<string> OnGamepadDisconnected
+        {
+            add { }
+            remove { }
+        }
+
+        public IGamepad GetGamepad(string id)
+        {
+            if (!_keyboardIdentifers[0].Equals(id))
+            {
+                return null;
+            }
+
+            return new AvaloniaKeyboard(this, _keyboardIdentifers[0], LocaleManager.Instance[LocaleKeys.AllKeyboards]);
+        }
+
+        protected virtual void Dispose(bool disposing)
+        {
+            if (disposing)
+            {
+                _control.KeyUp -= OnKeyPress;
+                _control.KeyDown -= OnKeyRelease;
+            }
+        }
+
+        protected void OnKeyPress(object sender, KeyEventArgs args)
+        {
+            _pressedKeys.Add(args.Key);
+
+            KeyPressed?.Invoke(this, args);
+        }
+
+        protected void OnKeyRelease(object sender, KeyEventArgs args)
+        {
+            _pressedKeys.Remove(args.Key);
+
+            KeyRelease?.Invoke(this, args);
+        }
+
+        internal bool IsPressed(Key key)
+        {
+            if (key == Key.Unbound || key == Key.Unknown)
+            {
+                return false;
+            }
+
+            AvaloniaKeyboardMappingHelper.TryGetAvaKey(key, out var nativeKey);
+
+            return _pressedKeys.Contains(nativeKey);
+        }
+
+        public void ResetKeys()
+        {
+            _pressedKeys.Clear();
+        }
+
+        public void Dispose()
+        {
+            Dispose(true);
+        }
+    }
+}