Track the username (cs-username) as User ID in IIS and W3C extended logs

[roycolbert]

I have to monitor IIS intranet sites where I cannot add javascript to the web pages for the analytics. I have to use web log analytics. There is no way to capture the cs-username in IIS. This is essential for intranet monitoring because the business wants to know specifically who is using the websites and how much time they spend using it.

Migrated from matomo-org/matomo#5980