add playwright layout

e2e/example.spec.ts

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+import { expect, test } from '@playwright/test';
+
+test.beforeEach(async ({page})=>{
+  await page.goto('/')
+  await expect(page.locator('div').nth(2)).toContainClass('bg-green-400');
+})
+
+
+test('has title', async ({ page }) => {
+  await page.goto('/');
+  // Expect a title "to contain" a substring.
+  await expect(page).toHaveTitle(/Showbridge/);
+});
+
+

e2e/modules.spec.ts

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+import { expect, test } from '@playwright/test'
+
+test('add module', async ({ page }) => {
+    await page.goto('/');
+    await page.locator('app-module-list').getByText('add').click();
+    await page.getByRole('menuitem', { name: 'HTTP Server' }).click();
+})

e2e/tsconfig.json

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+{
+  "extends": "../tsconfig.json",
+  "include": ["./**/*.ts"]
+}