Feat: Impmlement invoice pdf rendering

tests/Service/Pdf/ContractRendererTest.php

@@ -18,7 +18,7 @@ use Symfony\Contracts\Translation\TranslatorInterface;
 
 class ContractRendererTest extends WebTestCase
 {
-    public function testRendersCard(): void
+    public function testRendersContract(): void
     {
         $projectDir = static::getContainer()->getParameter('kernel.project_dir');
         $translator = $this->createMock(TranslatorInterface::class);