fix: Add a new test utils

Author: Who-is-PS

src/test-utils/dom/tooltip/index.ts

@@ -0,0 +1,9 @@
+// Copyright Amazon.com, Inc. or its affiliates. All Rights Reserved.
+// SPDX-License-Identifier: Apache-2.0
+import { ComponentWrapper } from '@cloudscape-design/test-utils-core/dom';
+
+import styles from '../../../tooltip/styles.selectors.js';
+
+export default class TooltipWrapper extends ComponentWrapper {
+  static rootSelector: string = styles.root;
+}