Add RegroupmentRepositoryInterface and integrate it

Created a new `RegroupmentRepositoryInterface` to define repository methods for Regroupment entities. Updated `RegroupmentRepository` to implement this interface, and replaced its usage in `ExportConfigNormalizer` for better abstraction and testability.

src/Bundle/ChillMainBundle/Export/ExportConfigNormalizer.php

@@ -18,6 +18,7 @@ use Chill\MainBundle\Form\Type\Export\ExportType;
 use Chill\MainBundle\Form\Type\Export\FilterType;
 use Chill\MainBundle\Repository\CenterRepositoryInterface;
 use Chill\MainBundle\Repository\RegroupmentRepository;
+use Chill\MainBundle\Repository\RegroupmentRepositoryInterface;
 
 /**
  * @phpstan-type NormalizedData array{centers: array{centers: list<int>, regroupments: list<int>}, export: array{form: array<string, mixed>, version: int}, filters: array<string, array{enabled: boolean, form: array<string, mixed>, version: int}>, aggregators: array<string, array{enabled: boolean, form: array<string, mixed>, version: int}>, pick_formatter: string, formatter: array{form: array<string, mixed>, version: int}}
@@ -27,7 +28,7 @@ class ExportConfigNormalizer
     public function __construct(
         private readonly ExportManager $exportManager,
         private readonly CenterRepositoryInterface $centerRepository,
-        private readonly RegroupmentRepository $regroupmentRepository,
+        private readonly RegroupmentRepositoryInterface $regroupmentRepository,
     ) {}
 
     /**

src/Bundle/ChillMainBundle/Repository/RegroupmentRepository.php

@@ -18,7 +18,7 @@ use Doctrine\ORM\NonUniqueResultException;
 use Doctrine\ORM\NoResultException;
 use Doctrine\Persistence\ObjectRepository;
 
-final readonly class RegroupmentRepository implements ObjectRepository
+final readonly class RegroupmentRepository implements RegroupmentRepositoryInterface
 {
     private EntityRepository $repository;
 

src/Bundle/ChillMainBundle/Repository/RegroupmentRepositoryInterface.php

@@ -0,0 +1,25 @@
+<?php
+
+namespace Chill\MainBundle\Repository;
+
+use Chill\MainBundle\Entity\Regroupment;
+use Doctrine\ORM\NonUniqueResultException;
+use Doctrine\ORM\NoResultException;
+use Doctrine\Persistence\ObjectRepository;
+
+/**
+ * @template-extends ObjectRepository<Regroupment>
+ */
+interface RegroupmentRepositoryInterface extends ObjectRepository
+{
+    /**
+     * @throws NonUniqueResultException
+     * @throws NoResultException
+     */
+    public function findOneByName(string $name): ?Regroupment;
+
+    /**
+     * @return array<Regroupment>
+     */
+    public function findRegroupmentAssociatedToNoCenter(): array;
+}