[Bug]: sBTC token not SIP 10 compatible

[friedger]

SIP-10 requires to print memos provided in the transfer function. The sBTC token contract does not print the memo.

See https://github.com/stacksgov/sips/blob/main/sips/sip-010/sip-010-fungible-token-standard.md#transfer

[setzeus]

Already added here: #1008

Just to confirm, does the print statement have to follow the format mentioned (using match) or is the following valid?

(print { topic: "transfer", amount: amount, sender: sender, recipient: recipient, memo: memo })

[friedger]

The requirement is that the next event after ft transfer event is the memo.