NIP-37: Editable Short Notes

https://github.com/vitorpamplona/nips/blob/content-editable-kind1/37.md

`content` のみ編集可能な `kind: 1` (Short Text Note)

メタデータ (`kind: 10`) と `content` (`kind: 31010`) に分かれる

PR: https://github.com/nostr-protocol/nips/pull/1088

#Nostr