feat(Subscription): add subscription status

Closes #436

Author: jenschude

src/Core/Model/Subscription/IronMQDestination.php

@@ -10,6 +10,7 @@
 /**
  * @package Commercetools\Core\Model\Subscription
  *
+ * @deprecated
  * @method string getType()
  * @method IronMQDestination setType(string $type = null)
  * @method string getUri()

src/Core/Model/Subscription/Subscription.php

@@ -32,10 +32,17 @@
  * @method Subscription setMessages(MessageSubscriptionCollection $messages = null)
  * @method ChangeSubscriptionCollection getChanges()
  * @method Subscription setChanges(ChangeSubscriptionCollection $changes = null)
+ * @method string getStatus()
+ * @method Subscription setStatus(string $status = null)
  * @method SubscriptionReference getReference()
  */
 class Subscription extends Resource
 {
+    const STATUS_HEALTHY = 'Healthy';
+    const STATUS_CONFIGURATION_ERROR = 'ConfigurationError';
+    const STATUS_CONFIGURATION_ERROR_DELIVERY_STOPPED = 'ConfigurationErrorDeliveryStopped';
+    const STATUS_TEMPORARY_ERROR = 'TemporaryError';
+
     public function fieldDefinitions()
     {
         return [
@@ -53,6 +60,7 @@ public function fieldDefinitions()
             'destination' => [static::TYPE => Destination::class],
             'messages' => [static::TYPE => MessageSubscriptionCollection::class],
             'changes' => [static::TYPE => ChangeSubscriptionCollection::class],
+            'status' => [static::TYPE => 'string']
         ];
     }
 }