feat: Add test infrastructure with Jest and Playwright for Chromium

playwright.config.js

@@ -0,0 +1,24 @@
+const { defineConfig, devices } = require('@playwright/test');
+
+module.exports = defineConfig({
+  testDir: './tests',
+  timeout: 30000,
+  expect: {
+    timeout: 5000,
+  },
+  fullyParallel: true,
+  workers: 1,
+  retries: 1,
+  reporter: 'list',
+  use: {
+    baseURL: 'http://localhost:3000',
+    trace: 'on-first-retry',
+    video: 'on-first-retry',
+  },
+  projects: [
+    {
+      name: 'chromium',
+      use: { ...devices['Desktop Chromium'] },
+    },
+  ],
+});