Add send support for payment request codes (BIP-70/BIP-72) / JSON Payment Protocol
https://github.com/bitcoin/bips/blob/master/bip-0070.mediawiki
https://github.com/bitcoin/bips/blob/master/bip-0072.mediawiki
https://github.com/bitcoin/bips/blob/master/bip-0071.mediawiki
Example: bitcoincash:?r=https://pay2.bitcoin.com/i/K4nf1taH3XaEoTEheDZwFg
Consider AnyPay integration in this
{"network":"bitcoin-sv","outputs":[{"script":"76a914f903154ea10da6febc96e43f321cae37e65758ac88ac","amount":12737555}],"creationTimestamp":1689091911,"expirationTimestamp":1689092811,"memo":"Anypay™","paymentUrl":"https://anypayx.com/r/RNHZ8IY-d/pay/BSV/bip270","merchantData":"{\"invoiceUid\":\"RNHZ8IY-d\",\"merchantName\":null,\"avatarUrl\":null}"}