Need to get some funky 'ticket' parameters from the createPayment response - maybe just using the rawResponse property is OK rather than adding something really weird to the SmashPig response object?
https://docs.dlocal.com/docs/pix-payments
https://docs.dlocal.com/docs/brazil#pix
Need to show a QR image (url given in createPayment response) to support desktop flow (note that this will have CSP implications), and facilitate copy-pasting a ticket number for mobile flow.