⚡️(e2e) add workers to playwright with CI

We have added workers to playwright to run tests in parallel,
this will help us to run tests faster.
The tests run on a commun database, so to keep the tests
stable between browsers, we created 3 different
users to run the tests, it will avoid to have commun data
stepping on each other.

src/frontend/apps/e2e/playwright.config.ts

@@ -20,7 +20,7 @@ export default defineConfig({
   /* Retry on CI only */
   retries: process.env.CI ? 2 : 0,
   /* Opt out of parallel tests on CI. */
-  workers: process.env.CI ? 1 : undefined,
+  workers: process.env.CI ? 3 : undefined,
   /* Reporter to use. See https://playwright.dev/docs/test-reporters */
   reporter: [['html', { outputFolder: './report' }]],
   /* Shared settings for all the projects below. See https://playwright.dev/docs/api/class-testoptions. */