nostrdb-net

Related notedeck/notecrumbs issue: - https://github.com/damus-io/notedeck/issues/586 It would be nice if we had a cross-platform networking component to nostrdb. Our rust crate is a good place for this. It could be a companion crate to nostrdb-rs It would also allow us to implement negentropy: - https://github.com/damus-io/nostrdb/issues/3