create view for current address and apply on Person/Household normalizer

src/Bundle/ChillMainBundle/Entity/Address.php

@@ -116,7 +116,7 @@ class Address
      * @ORM\Column(type="date")
      * @groups({"write"})
      */
-    private $validFrom;
+    private \DateTime $validFrom;
 
     /**
      * Indicates when the address ends. Used to build an history
@@ -127,7 +127,7 @@ class Address
      * @ORM\Column(type="date", nullable=true)
      * @groups({"write"})
      */
-    private $validTo;
+    private ?\DateTime $validTo = null;
 
     /**
      * True if the address is a "no address", aka homeless person, ...