🏗️(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/utils-sub-pages.ts

@@ -0,0 +1,45 @@
+import { Page, expect } from '@playwright/test';
+
+import {
+  randomName,
+  updateDocTitle,
+  waitForResponseCreateDoc,
+} from './utils-common';
+
+export const createRootSubPage = async (
+  page: Page,
+  browserName: string,
+  docName: string,
+) => {
+  // Get response
+  const responsePromise = waitForResponseCreateDoc(page);
+  await clickOnAddRootSubPage(page);
+  const response = await responsePromise;
+  expect(response.ok()).toBeTruthy();
+  const subPageJson = (await response.json()) as { id: string };
+
+  // Get doc tree
+  const docTree = page.getByTestId('doc-tree');
+  await expect(docTree).toBeVisible();
+
+  // Get sub page item
+  const subPageItem = docTree
+    .getByTestId(`doc-sub-page-item-${subPageJson.id}`)
+    .first();
+  await expect(subPageItem).toBeVisible();
+  await subPageItem.click();
+
+  // Update sub page name
+  const randomDocs = randomName(docName, browserName, 1);
+  await updateDocTitle(page, randomDocs[0]);
+
+  // Return sub page data
+  return { name: randomDocs[0], docTreeItem: subPageItem, item: subPageJson };
+};
+
+export const clickOnAddRootSubPage = async (page: Page) => {
+  const rootItem = page.getByTestId('doc-tree-root-item');
+  await expect(rootItem).toBeVisible();
+  await rootItem.hover();
+  await rootItem.getByRole('button', { name: 'add_box' }).click();
+};