Refactor entities and codebase for native property usage

- Replaced getters/setters with direct property access across entities and repositories.
- Added and configured `martin-georgiev/postgresql-for-doctrine` for PostgreSQL enhancements.
- Updated Doctrine configuration with types, mappings, and JSONB query functions.
- Removed unused `EliminationService` and related YAML configurations.

src/Controller/Backoffice/BackofficeController.php

@@ -61,7 +61,7 @@ final class BackofficeController extends AbstractController
             $em->persist($season);
             $em->flush();
 
-            return $this->redirectToRoute('tvdt_backoffice_season', ['seasonCode' => $season->getSeasonCode()]);
+            return $this->redirectToRoute('tvdt_backoffice_season', ['seasonCode' => $season->seasonCode]);
         }
 
         return $this->render('backoffice/season_add.html.twig', ['form' => $form]);