NLog v5.2 will no longer perform any assembly loading and scanning during initialization

[czd890]

https://nlog-project.org/2023/05/30/nlog-5-2-trim-warnings.html

[snakefoot]

Unless explicitly requested, like this in NLog.config:

  <extensions>
    <add assembly="SumoLogic.Logging.NLog"/>
  </extensions>

But it is nice to provide a NLog.LogManager.Setup()-extension-method, to register-library-extensions from code, instead of relying on assembly-scanning.