✨ feat(etl): Add ETL authentication and navigation

Add Keycloak authentication for ETL users.
Configure ETL routes and login/logout functionality.
Integrate ETL with Keycloak SSO.
Update vite.config.js to include etl.js.
Create EtlController with home, login, and logout routes.
Implement EtlAuthenticator for email/password login.
Configure security.yaml for ETL firewall and providers.
Add etl.js and etl.scss for ETL frontend.
Add Keycloak client configuration for ETL.
Update PrestaireController to use absolute URL for login.

migrations/Version20260206190000.php

@@ -0,0 +1,31 @@
+<?php
+
+declare(strict_types=1);
+
+namespace DoctrineMigrations;
+
+use Doctrine\DBAL\Schema\Schema;
+use Doctrine\Migrations\AbstractMigration;
+
+/**
+ * Auto-generated Migration: Please modify to your needs!
+ */
+final class Version20260206190000 extends AbstractMigration
+{
+    public function getDescription(): string
+    {
+        return 'Add type_payment to contrats_payments';
+    }
+
+    public function up(Schema $schema): void
+    {
+        // this up() migration is auto-generated, please modify it to your needs
+        $this->addSql('ALTER TABLE contrats_payments ADD type_payment VARCHAR(255) DEFAULT NULL');
+    }
+
+    public function down(Schema $schema): void
+    {
+        // this down() migration is auto-generated, please modify it to your needs
+        $this->addSql('ALTER TABLE contrats_payments DROP type_payment');
+    }
+}