misc: Move the rest of Ryujinx.UI.Common into other parts of the project.

src/Ryujinx/Utilities/Configuration/UI/WindowStartup.cs

@@ -0,0 +1,11 @@
+namespace Ryujinx.Ava.Utilities.Configuration.UI
+{
+    public struct WindowStartup
+    {
+        public int WindowSizeWidth { get; set; }
+        public int WindowSizeHeight { get; set; }
+        public int WindowPositionX { get; set; }
+        public int WindowPositionY { get; set; }
+        public bool WindowMaximized { get; set; }
+    }
+}