feat: Add e2e setup and tests (#535)

e2e/fixtures/base/playwright.config.ts

@@ -0,0 +1,26 @@
+import * as path from 'path'
+
+import { defineConfig } from '@playwright/test'
+
+const __dirname = import.meta.dirname
+
+const tuonoDir = path.join(__dirname, '../../../', 'target', 'debug', 'tuono')
+const setupScript = path.join(__dirname, '../..', 'e2e-test-setup.js')
+
+export default defineConfig({
+  testDir: './tests',
+  fullyParallel: true,
+  forbidOnly: !!process.env.CI,
+  retries: process.env.CI ? 2 : 0,
+  workers: process.env.CI ? 1 : undefined,
+  webServer: {
+    command: `node ${setupScript} && ${tuonoDir} dev`,
+    port: 3000,
+    timeout: 420 * 1000,
+    stdout: 'pipe',
+    reuseExistingServer: false,
+  },
+  use: {
+    baseURL: 'http://localhost:3000',
+  },
+})