[address] allow to add custom data on addresses

Entity/Address.php

@@ -44,6 +44,13 @@ class Address
      */
     private $isNoAddress = false;
     
+    /**
+     * A list of metadata, added by customizable fields
+     * 
+     * @var array
+     */
+    private $customs = [];
+    
     public function __construct()
     {
         $this->validFrom = new \DateTime();
@@ -183,6 +190,29 @@ class Address
         return $this;
     }
     
+    /**
+     * Get customs informations in the address
+     * 
+     * @return array
+     */
+    public function getCustoms(): array
+    {
+        return $this->customs;
+    }
+
+    /**
+     * Store custom informations in the address
+     * 
+     * @param array $customs
+     * @return $this
+     */
+    public function setCustoms(array $customs): self
+    {
+        $this->customs = $customs;
+        
+        return $this;
+    }
+        
     /**
      * Validate the address.
      *