🏗️(e2e) cleaning and more consistant naming

Clean up e2e tests by removing unused utils
and renaming some files for consistency.

src/frontend/apps/e2e/__tests__/app-impress/doc-create.spec.ts

@@ -6,7 +6,7 @@ import {
   keyCloakSignIn,
   randomName,
   verifyDocName,
-} from './common';
+} from './utils-common';
 
 test.beforeEach(async ({ page }) => {
   await page.goto('/');