porting shell from nuget to local

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

@@ -0,0 +1,18 @@
+using System;
+
+namespace Standard
+{
+	internal enum GPS
+	{
+		DEFAULT,
+		HANDLERPROPERTIESONLY,
+		READWRITE,
+		TEMPORARY = 4,
+		FASTPROPERTIESONLY = 8,
+		OPENSLOWITEM = 16,
+		DELAYCREATION = 32,
+		BESTEFFORT = 64,
+		NO_OPLOCK = 128,
+		MASK_VALID = 255
+	}
+}