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.

migrations/Version20251007194241.php

@@ -0,0 +1,26 @@
+<?php
+
+declare(strict_types=1);
+
+namespace DoctrineMigrations;
+
+use Doctrine\DBAL\Schema\Schema;
+use Doctrine\Migrations\AbstractMigration;
+
+final class Version20251007194241 extends AbstractMigration
+{
+    public function getDescription(): string
+    {
+        return 'Change elimination data type to jsonb';
+    }
+
+    public function up(Schema $schema): void
+    {
+        $this->addSql('ALTER TABLE elimination ALTER data TYPE JSONB');
+    }
+
+    public function down(Schema $schema): void
+    {
+        $this->addSql('ALTER TABLE elimination ALTER data TYPE JSON');
+    }
+}