Everything in the same project

- Build in intrinsic commands as part of dotnet

src/dotnet/commands/dotnet-compile-native/enums/OSMode.cs

@@ -0,0 +1,12 @@
+using System;
+using System.Collections.Generic;
+
+namespace Microsoft.DotNet.Tools.Compiler.Native
+{
+	public enum OSMode
+	{
+		Linux,
+		Windows,
+		Mac
+	}
+}