Add AssemblyInfo for Diagnostics

src/Microsoft.PowerShell.Commands.Diagnostics/AssemblyInfo.cs

@@ -0,0 +1,13 @@
+using System.Reflection;
+using System.Resources;
+
+[assembly:AssemblyFileVersionAttribute("3.0.0.0")]
+[assembly:AssemblyVersion("3.0.0.0")]
+
+[assembly:AssemblyCulture("")]
+[assembly:NeutralResourcesLanguage("en-US")]
+
+#if !CORECLR
+[assembly:AssemblyKeyFileAttribute(@"..\signing\visualstudiopublic.snk")]
+[assembly:AssemblyDelaySignAttribute(true)]
+#endif