Move solution and projects to src

src/Ryujinx.Graphics.OpenGL/Effects/IPostProcessingEffect.cs

@@ -0,0 +1,11 @@
+using Ryujinx.Graphics.OpenGL.Image;
+using System;
+
+namespace Ryujinx.Graphics.OpenGL.Effects
+{
+    internal interface IPostProcessingEffect :  IDisposable
+    {
+        const int LocalGroupSize = 64;
+        TextureView Run(TextureView view, int width, int height);
+    }
+}