checkCroatianBBAN function
Croatian (HR) BBAN check
@ignore
Implementation
bool checkCroatianBBAN(String bban) {
final int controlBankBranch = int.parse(bban[6], radix: 10);
final int controlAccount = int.parse(bban[16], radix: 10);
final String bankBranch = bban.substring(0, 6);
final String account = bban.substring(7, 16);
return checkMod1110(bankBranch, controlBankBranch) &&
checkMod1110(account, controlAccount);
}