porting shell from nuget to local

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

@@ -0,0 +1,22 @@
+using System;
+
+namespace Standard
+{
+	[Flags]
+	internal enum CS : uint
+	{
+		VREDRAW = 1u,
+		HREDRAW = 2u,
+		DBLCLKS = 8u,
+		OWNDC = 32u,
+		CLASSDC = 64u,
+		PARENTDC = 128u,
+		NOCLOSE = 512u,
+		SAVEBITS = 2048u,
+		BYTEALIGNCLIENT = 4096u,
+		BYTEALIGNWINDOW = 8192u,
+		GLOBALCLASS = 16384u,
+		IME = 65536u,
+		DROPSHADOW = 131072u
+	}
+}