Revert "Revert the Metal Experiment (#701)"

This reverts commit fe1617ffea.

src/Ryujinx.Graphics.Shader/CodeGen/Msl/Instructions/InstInfo.cs

@@ -0,0 +1,18 @@
+namespace Ryujinx.Graphics.Shader.CodeGen.Msl.Instructions
+{
+    readonly struct InstInfo
+    {
+        public InstType Type { get; }
+
+        public string OpName { get; }
+
+        public int Precedence { get; }
+
+        public InstInfo(InstType type, string opName, int precedence)
+        {
+            Type = type;
+            OpName = opName;
+            Precedence = precedence;
+        }
+    }
+}