firstname property added to thirdparty + canonicalize function adapted

src/Bundle/ChillThirdPartyBundle/Entity/ThirdParty.php

@@ -222,6 +222,15 @@ class ThirdParty implements TrackCreationInterface, TrackUpdateInterface
      */
     private ?string $name = '';
 
+    /**
+     * @ORM\Column(name="firstname", type="string", length=255)
+     * @Assert\Length(min="2")
+     * @Assert\NotNull
+     * @Assert\NotBlank
+     * @Groups({"read", "write", "docgen:read", "docgen:read:3party:parent"})
+     */
+    private ?string $firstname = '';
+
     /**
      * [fr] Raison sociale.
      *