porting shell from nuget to local

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

@@ -0,0 +1,16 @@
+using System;
+
+namespace Standard
+{
+	[Flags]
+	internal enum HCF
+	{
+		HIGHCONTRASTON = 1,
+		AVAILABLE = 2,
+		HOTKEYACTIVE = 4,
+		CONFIRMHOTKEY = 8,
+		HOTKEYSOUND = 16,
+		INDICATOR = 32,
+		HOTKEYAVAILABLE = 64
+	}
+}