porting shell from nuget to local

src/Shared/Microsoft.Windows.Shell/JumpItemRejectionReason.cs

@@ -0,0 +1,12 @@
+using System;
+
+namespace Microsoft.Windows.Shell
+{
+	public enum JumpItemRejectionReason
+	{
+		None,
+		InvalidItem,
+		NoRegisteredHandler,
+		RemovedByUser
+	}
+}