[WIP] Add PostalCodeForAddressReferenceRepository and associated tests

Introduced `PostalCodeForAddressReferenceRepository` and its interface to support optimized postal code search using materialized views. Updated `AddressReferenceRepository` to improve query handling. Added test coverage for the new repository functionality.

src/Bundle/ChillMainBundle/Repository/AddressReferenceRepository.php

@@ -85,7 +85,7 @@ final readonly class AddressReferenceRepository implements AddressReferenceRepos
 
         $paramId = 0;
 
-        foreach ($terms as $k => $term) {
+        foreach ($terms as $term) {
             $qb->andWhere('var.address like ?');
             $qb->setParameter(++$paramId, "%{$term}%");
         }