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/Dto/Result.php

@@ -0,0 +1,19 @@
+<?php
+
+declare(strict_types=1);
+
+namespace Tvdt\Dto;
+
+use Symfony\Component\Uid\Uuid;
+
+final readonly class Result
+{
+    public function __construct(
+        public Uuid $id,
+        public string $name,
+        public int $correct,
+        public float $corrections,
+        public \DateInterval $time,
+        public float $score,
+    ) {}
+}