Move solution and projects to src

src/Ryujinx.Graphics.GAL/IWindow.cs

@@ -0,0 +1,17 @@
+using System;
+
+namespace Ryujinx.Graphics.GAL
+{
+    public interface IWindow
+    {
+        void Present(ITexture texture, ImageCrop crop, Action swapBuffersCallback);
+
+        void SetSize(int width, int height);
+
+        void ChangeVSyncMode(bool vsyncEnabled);
+
+        void SetAntiAliasing(AntiAliasing antialiasing);
+        void SetScalingFilter(ScalingFilter type);
+        void SetScalingFilterLevel(float level);
+    }
+}