Add support for serializing identifiers in PersonJsonNormalizer and improve PersonIdentifier entity serialization.

- Extended `PersonJsonNormalizer` to include `identifiers` field normalization.
- Added `Serializer` annotations to `PersonIdentifier` and `PersonIdentifierDefinition` for enhanced serialization support.
- Updated `PersonIdentifier` and `PersonIdentifierDefinition` to define serialization groups and discriminator maps.

src/Bundle/ChillPersonBundle/Serializer/Normalizer/PersonJsonNormalizer.php

@@ -69,6 +69,7 @@ class PersonJsonNormalizer implements NormalizerAwareInterface, NormalizerInterf
             'gender' => $this->normalizer->normalize($person->getGender(), $format, $context),
             'civility' => $this->normalizer->normalize($person->getCivility(), $format, $context),
             'personId' => $this->personIdRendering->renderPersonId($person),
+            'identifiers' => $this->normalizer->normalize($person->getIdentifiers(), $format, $context),
         ];
 
         if (\in_array('minimal', $groups, true) && 1 === \count($groups)) {