Fix Exception when trying to apply Credit Card Payment to Sales Receipt

[Serfe-com]

This MR fixes the issue that prevents the CC payment on sale receipt conversion which triggers #275.

Use SalesReceiptCCPayment instead of CreditCardPayment to avoid the mapping.

To make this work use the following structure:

$salesReceiptObj = SalesReceipt::create([
            "CustomerRef" => [
                "value" => $customerRequestObj->Id,
            ],
            "BillEmail" => [
                "Address" => $billingEmail,
            ],
            "Line" => [[
                "Id" => "1",
                "LineNum" => 1,
                "Description" => "Pest Control Services",
                "Amount" => 35.0,
                "DetailType" => "SalesItemLineDetail",
                "SalesItemLineDetail" => [
                    "ItemRef" => [
                        "value" => "1",
                        "name" => "Pest Control",
                    ],
                    "UnitPrice" => 35,
                    "Qty" => 1,
                    "TaxCodeRef" => [
                        "value" => "NON",
                    ],
                ],
            ]],
            "PaymentType" => "CreditCard",
            "SalesReceiptCCPayment" => [
                "CreditChargeInfo" => [
                    "ProcessPayment" => true,
                ],
                "CreditChargeResponse" => [
                    "CCTransId" => "E2XT5I2FFZGS"
                ]
            ],
            "TxnSource" => "IntuitPayment",
        ]);

We avoid the mapping from CreditCardPayment to BillPaymentCreditCard with this.

We don't know if removing the mapping might affect this, so we added this to conserve backward compatibility.