Add distributed pub-sub query feature

[Arkatufus]

Fixes #3663

Changes

Please provide a brief description of the changes here.

Checklist

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

• [x] This change follows the Akka.NET API Compatibility Guidelines.
• [x] 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.

[Aaronontheweb]

• Get list of available topics
• Get list of all topics and their subscriber counts locally
• Get list of all topics and their subscriber counts globally, with the node address as a relevant "column" in the results