porting shell from nuget to local

src/Shared/Microsoft.Windows.Shell/Standard/RefPOINT.cs

@@ -0,0 +1,15 @@
+using System;
+using System.Diagnostics.CodeAnalysis;
+using System.Runtime.InteropServices;
+
+namespace Standard
+{
+	[SuppressMessage("Microsoft.Performance", "CA1812:AvoidUninstantiatedInternalClasses")]
+	[StructLayout(LayoutKind.Sequential)]
+	internal class RefPOINT
+	{
+		public int x;
+
+		public int y;
+	}
+}