Annotate `Microsoft.Extensions.Logging` extension methods such as `LogInformation`

There are lots of extension methods that do not allow `null` extension argument.
Currently they don't have neither NRT annotations nor extension annotations so it leads to missing warnings when you call them on nullable objects e.g.


Would be nice to have them annotated. Here's the source code with all the methods
https://github.com/aspnet/Logging/blob/master/src/Microsoft.Extensions.Logging.Abstractions/LoggerExtensions.cs