Duplicate payment profile code should lookup if method is already in system

The following code handles the duplicate payment profile response

        // Handle duplicate.
        if ($response->getMessages()[0]->getCode() == 'E00039') {
          $result = array_filter(explode(' ', $response->getMessages()[0]->getText()), 'is_numeric');
          $customer_id = reset($result);

          $payment_profile = $this->buildCustomerPaymentProfile($payment_method, $payment_details, $customer_id);
          $request = new CreateCustomerPaymentProfileRequest($this->authnetConfiguration, $this->httpClient);
          $request->setCustomerProfileId($customer_id);
          $request->setPaymentProfile($payment_profile);
          $response = $request->execute();

          if ($response->getResultCode() != 'Ok') {
            throw new InvalidResponseException("Unable to create payment profile for existing customer");
          }

          $payment_profile_id = $response->customerPaymentProfileId;
        }

However this means duplicate cards will show up in Drupal. This needs to look up if the remote ID is already saved as a payment method for the user and then return it. This will require working \Drupal\commerce_authnet\Plugin\Commerce\PaymentGateway\AuthorizeNet::doCreatePaymentMethod a bit.