feat(component): init app sidebar (#2135)

tests/parallels/subpage.spec.ts

@@ -7,7 +7,7 @@ import { waitMarkdownImported } from '../libs/page-logic';
 test('Create subpage', async ({ page }) => {
   await openHomePage(page);
   await waitMarkdownImported(page);
-  await page.getByTestId('sliderBar-arrowButton-collapse').click();
+  await page.getByTestId('app-sidebar-arrow-button-collapse').click();
   const sliderBarArea = page.getByTestId('sliderBar-inner');
   await expect(sliderBarArea).not.toBeInViewport();
 });