Added playwright tests. (#6212)

* Added playwright tests.

* Added clear authorship color.

* Ported enter ts.

* Ported more tests.

* Commented helper tests.

* Fixed admin tests.

* Fixed.

* Fixed admin pages not there.

* Fixed waiting.

* Upload playwright report.

* Remove saucelabs

* Fixed waiting.

* Fixed upload artifact.

* Also install deps.

* Added retry mechanism.

* Added timeout for restart etherpad server.

* Fixed tests.

* Added frontend playwright tests.

src/tests/frontend-new/helper/adminhelper.ts

@@ -0,0 +1,32 @@
+import {expect, Page} from "@playwright/test";
+
+export const loginToAdmin = async (page: Page, username: string, password: string) => {
+
+    await page.goto('http://localhost:9001/admin/');
+
+    await page.waitForSelector('input[name="username"]');
+    await page.fill('input[name="username"]', username);
+    await page.fill('input[name="password"]', password);
+    await page.click('input[type="button"]');
+}
+
+
+export const saveSettings = async (page: Page) => {
+    // Click save
+    await page.locator('.settings-button-bar').locator('button').first().click()
+    await page.waitForSelector('.ToastRootSuccess')
+}
+
+export const restartEtherpad = async (page: Page) => {
+    // Click restart
+    const restartButton = page.locator('.settings-button-bar').locator('.settingsButton').nth(1)
+    const settings =  page.locator('.settings');
+    await expect(settings).not.toBeEmpty();
+    await expect(restartButton).toBeVisible()
+    await page.locator('.settings-button-bar')
+        .locator('.settingsButton')
+        .nth(1)
+        .click()
+    await page.waitForTimeout(500)
+    await page.waitForSelector('.settings')
+}