feat: CookieJar on Client (#3418)

* feat: CookieJar on Client

* typo: phpdoc @return for cookieJar

Author: Grafikart

src/Bridge/Symfony/Bundle/Test/Client.php

@@ -14,6 +14,7 @@
 namespace ApiPlatform\Core\Bridge\Symfony\Bundle\Test;
 
 use Symfony\Bundle\FrameworkBundle\KernelBrowser;
+use Symfony\Component\BrowserKit\CookieJar;
 use Symfony\Component\DependencyInjection\ContainerInterface;
 use Symfony\Component\HttpClient\HttpClientTrait;
 use Symfony\Component\HttpKernel\KernelInterface;
@@ -167,6 +168,14 @@ public function getContainer(): ?ContainerInterface
         return $this->kernelBrowser->getContainer();
     }
 
+    /**
+     * Returns the CookieJar instance.
+     */
+    public function getCookieJar(): CookieJar
+    {
+        return $this->kernelBrowser->getCookieJar();
+    }
+
     /**
      * Returns the kernel.
      */