Update and enhance publish and deployment for IIS

[guardrex]

From @cnicco ...

RE: Hosting on IIS

https://docs.microsoft.com/aspnet/core/host-and-deploy/iis
host-and-deploy/iis/index.md

often there is a clear demarcation of responsibilities between developer and IIS administrator. It would be very useful if the one liner 'Use any of several methods to move the app to the hosting system, such as manual copy, Xcopy, Robocopy, or PowerShell.' was expanded upon so developer understands what needs to be produced from Visual Studio for distribution to the IIS admins and what IIS admins should expect and what they need to do with it.

Thanks @cnicco for the comment! 🚀

What needs to be produced from Visual Studio for distribution to the IIS admins

I can improve this bit by adding an additional link to the Directory Structure topic (there's one just a bit earlier in the topic). The Directory Structure topic needs a few minor touch-ups as well.

What IIS admins should expect and what they need to do with it

Beyond the content of Host on IIS, ANCM reference, Directory Structure, Troubleshooting, and the Common Errors topic, additional coverage for IIS admins is probably beyond the scope of this doc set. I can cross-link these topics to the IIS doc set better to help IIS admins.