takeover of old passkey learning repo

tests/test.ts

@@ -0,0 +1,6 @@
+import { expect, test } from '@playwright/test';
+
+test('index page has expected h1', async ({ page }) => {
+	await page.goto('/');
+	expect(await page.textContent('h1')).toBe('Welcome to SvelteKit');
+});