Diagrams or illustrations warmly welcome

@gozala wrote on a merged PR: 

> Ideally we'd even have visuals like ssb and dat protocols have

- https://ssbc.github.io/scuttlebutt-protocol-guide/#rpc-protocol
- https://dat-ecosystem-archive.github.io/how-dat-works/#mdns-response

> And I was hoping we could generate such things from the extended schema