[Server Integration tests] Enrich integration GraphQL API tests (#7699)

### Description

- We are using gql instead of strings to be able to see the graphql code
highlighted

### Demo


![](https://assets-service.gitstart.com/28455/d06016b9-c62c-4e0d-bb16-3d7dd42c5b6b.png)

Fixes #7526

---------

Co-authored-by: gitstart-twenty <gitstart-twenty@users.noreply.github.com>
Co-authored-by: Charles Bochet <charles@twenty.com>
Co-authored-by: Charles Bochet <charlesBochet@users.noreply.github.com>

packages/twenty-server/test/integration/utils/setup-test.ts

@@ -0,0 +1,16 @@
+import { JestConfigWithTsJest } from 'ts-jest';
+import 'tsconfig-paths/register';
+
+import { createApp } from './create-app';
+
+export default async (_, projectConfig: JestConfigWithTsJest) => {
+  const app = await createApp({});
+
+  if (!projectConfig.globals) {
+    throw new Error('No globals found in project config');
+  }
+
+  await app.listen(projectConfig.globals.APP_PORT);
+
+  global.app = app;
+};