Allow window to remember its size, position and state (GTK + Avalonia) (#4657)

* Update ConfigurationState.cs

* Update ConfigurationFileFormat.cs

* Update MainWindow.cs

* Update ConfigurationFileFormat.cs

* Update ConfigurationState.cs

* Update MainWindow.cs

* Update MainWindow.cs

* Update Ryujinx.Ui.Common/Configuration/ConfigurationState.cs

Co-authored-by: gdkchan <gab.dark.100@gmail.com>

* Update MainWindow.cs

* Update Ryujinx/Ui/MainWindow.cs

Co-authored-by: gdkchan <gab.dark.100@gmail.com>

* Initial properties

* Viewmodel adjustments and additions

* abstract and monitor dimension changes

* Remove position from ViewModel and simplify methods

* Remove unused dep

* Update configuration and fix typo from AA

* review changes

* Review changes

* Screensize checks - Ava

* Review changes 2

* basic review changes

* Standardise GTK/Ava functions

* Actually call function

---------

Co-authored-by: HaizenTrist <123991082+HaizenTrist@users.noreply.github.com>
Co-authored-by: gdkchan <gab.dark.100@gmail.com>

src/Ryujinx.Ui.Common/Configuration/ConfigurationFileFormat.cs

@@ -14,7 +14,7 @@ namespace Ryujinx.Ui.Common.Configuration
         /// <summary>
         /// The current version of the file format
         /// </summary>
-        public const int CurrentVersion = 46;
+        public const int CurrentVersion = 47;
 
         /// <summary>
         /// Version of the configuration file format
@@ -251,6 +251,11 @@ namespace Ryujinx.Ui.Common.Configuration
         /// </summary>
         public ShownFileTypes ShownFileTypes { get; set; }
 
+        /// <summary>
+        /// Main window start-up position, size and state
+        /// </summary>
+        public WindowStartup WindowStartup { get; set; }
+
         /// <summary>
         /// Language Code for the UI
         /// </summary>