Resolution scaling hotkeys (#3185)

* hotkeys

* comments

* update implementation to include custom scales

* copypasta

* review changes

* hotkeys

* comments

* update implementation to include custom scales

* copypasta

* review changes

* Remove outdated configuration and force hotkeys unbound

* Add avalonia support

* Fix configuration file

* Update GTK implementation and fix config... again.

* Remove legacy implementation + nits

* Avalonia locales (DeepL)

* review

* Remove colon from chinese locale

* Update ConfigFile

* locale fix

Ryujinx.Ava/Assets/Locales/zh_CN.json

@@ -568,5 +568,7 @@
   "UpdateWindowTitle": "管理游戏更新",
   "CheatWindowHeading": "适用于 {0} [{1}] 的金手指",
   "DlcWindowHeading": "适用于 {0} [{1}] 的 DLC",
-  "GameUpdateWindowHeading": "适用于 {0} [{1}] 的更新"
+  "GameUpdateWindowHeading": "适用于 {0} [{1}] 的更新",
+  "SettingsTabHotkeysResScaleUpHotkey": "分辨率提高",
+  "SettingsTabHotkeysResScaleDownHotkey": "降低分辨率"
 }