WIP LogFiltering integration

[Aaronontheweb]

Changes

Attempts to add https://getakka.net/articles/utilities/logging.html#filtering-log-messages support to Serilog

Checklist

For significant changes, please ensure that the following have been completed (delete if not relevant):

• [ ] This change follows the Akka.NET API Compatibility Guidelines.
• [ ] This change follows the Akka.NET Wire Compatibility Guidelines.
• [ ] I have reviewed my own pull request.
• [ ] Design discussion issue #
• [ ] Changes in public API reviewed, if any.
• [ ] I have added website documentation for this feature.