Move solution and projects to src

src/Ryujinx.Graphics.Gpu/Engine/MmeShadowScratch.cs

@@ -0,0 +1,18 @@
+using System;
+using System.Runtime.InteropServices;
+
+namespace Ryujinx.Graphics.Gpu.Engine
+{
+    /// <summary>
+    /// Represents temporary storage used by macros.
+    /// </summary>
+    [StructLayout(LayoutKind.Sequential, Size = 1024)]
+    struct MmeShadowScratch
+    {
+#pragma warning disable CS0169
+        private uint _e0;
+#pragma warning restore CS0169
+        public ref uint this[int index] => ref AsSpan()[index];
+        public Span<uint> AsSpan() => MemoryMarshal.CreateSpan(ref _e0, 256);
+    }
+}