Initialize Clash Web source and deployment documentation

web/playwright.config.ts

@@ -0,0 +1,9 @@
+import { defineConfig } from '@playwright/test'
+
+export default defineConfig({
+  testDir: './e2e',
+  timeout: 60000,
+  workers: 1,
+  reporter: 'list',
+  use: { baseURL: process.env.CW_E2E_URL || 'http://127.0.0.1:18080', browserName: 'chromium', trace: 'retain-on-failure', screenshot: 'only-on-failure' },
+})