The PR to amend NIP-57 was merged a few days ago, so i added support on Snort

It just adds a tag to notes which clients can use to send zaps to a different LN address or LNURL than the author of the note.

It should be extended again to support "Splits" (this was my suggestion on the PR) in the same way that Prisms work, but some thought this was too much for clients