feat: Add testcontainers and Playwright (no-changelog) (#16662)

Co-authored-by: Tomi Turtiainen <10324676+tomi@users.noreply.github.com>

packages/testing/playwright/.eslintrc.js

@@ -0,0 +1,41 @@
+const sharedOptions = require('@n8n/eslint-config/shared');
+
+/**
+ * @type {import('@types/eslint').ESLint.ConfigData}
+ */
+module.exports = {
+	extends: ['@n8n/eslint-config/base', 'plugin:playwright/recommended'],
+
+	...sharedOptions(__dirname),
+
+	plugins: ['playwright'],
+
+	env: {
+		node: true,
+	},
+
+	rules: {
+		// TODO: remove these rules
+		'@typescript-eslint/no-explicit-any': 'off',
+		'@typescript-eslint/no-unsafe-argument': 'off',
+		'@typescript-eslint/no-unsafe-assignment': 'off',
+		'@typescript-eslint/no-unsafe-call': 'off',
+		'@typescript-eslint/no-unsafe-member-access': 'off',
+		'@typescript-eslint/no-unsafe-return': 'off',
+		'@typescript-eslint/no-unused-expressions': 'off',
+		'@typescript-eslint/no-use-before-define': 'off',
+		'@typescript-eslint/promise-function-async': 'off',
+		'n8n-local-rules/no-uncaught-json-parse': 'off',
+		'playwright/expect-expect': 'warn',
+		'playwright/max-nested-describe': 'warn',
+		'playwright/no-conditional-in-test': 'warn',
+		'playwright/no-skipped-test': 'warn',
+		'import/no-extraneous-dependencies': [
+			'error',
+			{
+				devDependencies: ['**/tests/**', '**/e2e/**', '**/playwright/**'],
+				optionalDependencies: false,
+			},
+		],
+	},
+};