[Deliverable] Implement Messaging module for Logos Core

[igor-sirotin]

Summary

Provide logos-messaging-nim as a module in Logos Core.
The module should expose Messaging API to be used by other Logos Core nodes

Checklist

• Code: link to GitHub issues/PRs/Epic
• Dogfood: link to dogfooding session/artefact
• Docs: links to README.md or logos dosc