Implement texture buffers (#1152)

* Implement texture buffers

* Throw NotSupportedException where appropriate

Ryujinx.Graphics.GAL/ITexture.cs

@@ -12,5 +12,6 @@ namespace Ryujinx.Graphics.GAL
         byte[] GetData();
 
         void SetData(ReadOnlySpan<byte> data);
+        void SetStorage(BufferRange buffer);
     }
 }