joyboy : event escrow for deposit claim and cancel (#184)
* event escrow for deposit claim and cancel
* review: key deposit_id and emit in end of function
* import transfer event
* format scarb check
* key index + transfer event if recipient alredy link
* fmt + starknet address on events
* rename to nostr_recipient
https://github.com/keep-starknet-strange/joyboy/commit/e4ff3b63ee0a18906390c342639be707e8838c57