Add playwright configs

Signed-off-by: Danila Fedorin <danila.fedorin@gmail.com>

e2e/visual.spec.ts

@@ -0,0 +1,7 @@
+import { test, expect } from '@playwright/test';
+
+test('example test', async ({ page }) => {
+  await page.goto('http://localhost:8081/blog/02_compiler_parsing/index.html');
+  await expect(page).toHaveScreenshot({ fullPage: true });
+});
+