Support all encodings, especially naddr.

[SilberWitch]

Title says it all. ☺️

Would like to be able to derive naddr from something similar to the nak command, with n number of relay hints:
nak encode naddr -d 1728392447948 --author fd208ee8c8f283780a9552896e4823cc9dc6bfd442063889577106940fd927c1 --kind 30023 --relay ws://localhost:8080 --relay wss://theforest.nostr1.com

which gives me:
naddr1qqxnzdej8qenjv35xsmnjdpcqyfhwue69uhkcmmrv9kxsmmnwsarsvpcxqq35amnwvaz7tm5dpjkvmmjv4ehgtnwdaehgu339e3k7mgzyr7jprhgeregx7q2j4fgjmjgy0xfm34l63pqvwyf2acsd9q0mynuzqcyqqq823cmhhd4e

I have a longform-note generator and I currently use nak over shell, to get naddr, which is sort of messy.
(just added the nak code, so that you have an easy test case)