Draft: Add Publisher-Subscriber Based RFsimulator Using ZeroMQ

Summary

This merge request introduces a new version of RFsimulator that follows a publish-subscribe (Pub-Sub) pattern using the ZeroMQ (ZMQ) library. The existing client-server version remains, and this new implementation is added alongside it.

What's Changed

• Switched from direct client-server communication to a Pub-Sub messaging pattern.
• Introduced a ZeroMQ broker to handle message distribution based on zmq proxy.
• Improved overall flexibility and scalability of the system.

For more details on the implementation, check out the documentation