Improve relay/pubkey hints when creating a status

Pubkey on e tags is a somewhat new thing: https://github.com/nostr-protocol/nips/commit/d68899881c647bc031c4e62fd0501323e8bad7f8

Ensure that all e, p, and q tags on events we create have our relay URL, and the author's pubkey for e tags (if possible).

Also ensure that embedded nostr: URIs contain relays, authors, kinds, etc.