Initial work

Ryujinx.Graphics.Shader/IntermediateRepresentation/CommentNode.cs

@@ -0,0 +1,12 @@
+namespace Ryujinx.Graphics.Shader.IntermediateRepresentation
+{
+    class CommentNode : Operation
+    {
+        public string Comment { get; }
+
+        public CommentNode(string comment) : base(Instruction.Comment, null)
+        {
+            Comment = comment;
+        }
+    }
+}