Customer migrated webhook (#35)

Author: bajb

src/Events/CustomerWHE.php

@@ -7,4 +7,5 @@ final class CustomerWHE
   const SUBJECT_ACCESS_REQUEST = 'customer.sar';
   const EMAIL_UNSUBSCRIBED = 'customer.email.unsubscribed';
   const DEFAULT_EMAIL_UPDATED = 'customer.default-email.updated';
+  const MIGRATED = 'customer.migrated';
 }

src/Payloads/Customer/CustomerMigratedWHP.php

@@ -0,0 +1,9 @@
+<?php
+namespace Fortifi\Webhooks\Payloads\Customer;
+
+class CustomerMigratedWHP extends CustomerWHP
+{
+  public $fromPlatform; // e.g. stripe, braintree, etc.
+  public $subscriptionIDs = []; // Platform Subscription ID > Subscription FID
+  public $platformCustomerID; // The ID of the customer on the platform they were migrated from
+}

src/Webhooks.php

@@ -22,6 +22,7 @@
 use Fortifi\Webhooks\Payloads\Customer\CustomerCreatedWHP;
 use Fortifi\Webhooks\Payloads\Customer\CustomerDefaultEmailChangedWHP;
 use Fortifi\Webhooks\Payloads\Customer\CustomerEmailUnsubscribedWHP;
+use Fortifi\Webhooks\Payloads\Customer\CustomerMigratedWHP;
 use Fortifi\Webhooks\Payloads\Customer\SubjectAccessRequestWHP;
 use Fortifi\Webhooks\Payloads\Employee\EmployeeAuthWHP;
 use Fortifi\Webhooks\Payloads\Invoice\InvoiceCreditWHP;
@@ -78,6 +79,7 @@ public static function all()
       CustomerWHE::EMAIL_UNSUBSCRIBED                => CustomerEmailUnsubscribedWHP::class,
       CustomerWHE::SUBJECT_ACCESS_REQUEST            => SubjectAccessRequestWHP::class,
       CustomerWHE::DEFAULT_EMAIL_UPDATED             => CustomerDefaultEmailChangedWHP::class,
+      CustomerWHE::MIGRATED                          => CustomerMigratedWHP::class,
       ContactWHE::PHONE_SUBSCRIBED                   => ContactPhoneWHP::class,
       ContactWHE::PHONE_UNSUBSCRIBED                 => ContactPhoneWHP::class,
       InvoiceWHE::CREATED                            => InvoiceWHP::class,