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.Ava/UI/Windows/MainWindow.axaml

@@ -12,15 +12,14 @@
     Cursor="{Binding Cursor}"
     Title="{Binding Title}"
     WindowState="{Binding WindowState}"
-    Width="1280"
-    Height="777"
+    Width="{Binding WindowWidth}"
+    Height="{Binding WindowHeight}"
     MinWidth="1092"
     MinHeight="672"
     d:DesignHeight="720"
     d:DesignWidth="1280"
     x:CompileBindings="True"
     x:DataType="viewModels:MainWindowViewModel"
-    WindowStartupLocation="CenterScreen"
     mc:Ignorable="d"
     Focusable="True">
     <Window.Styles>