Update configuration files and add an extension.

Resources/config/packages/dev/eulogin_cas_security.yaml

@@ -0,0 +1,4 @@
+security:
+    providers:
+        eulogin:
+            id: drupol\EuloginBundle\Security\Core\User\EuloginUserProvider

src/DependencyInjection/EuloginExtension.php

@@ -0,0 +1,25 @@
+<?php
+
+declare(strict_types=1);
+
+namespace drupol\ecas\DependencyInjection;
+
+use drupol\ecas\Ecas;
+use Symfony\Component\DependencyInjection\ContainerBuilder;
+use Symfony\Component\HttpKernel\DependencyInjection\Extension;
+
+/**
+ * Class EuloginExtension.
+ */
+class EuloginExtension extends Extension
+{
+    /**
+     * @param array<string> $configs
+     * @param ContainerBuilder $container
+     */
+    public function load(array $configs, ContainerBuilder $container): void
+    {
+        $casDefinition = $container->getDefinition('cas');
+        $casDefinition->setClass(Ecas::class);
+    }
+}