Add license to new test file created' did not match any files

Author: mansisampat

packages/auth/test/integration/flows/hosting_link.test.ts

@@ -1,3 +1,21 @@
+/**
+ * @license
+ * Copyright 2023 Google LLC
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *   http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+// eslint-disable-next-line import/no-extraneous-dependencies
 import { ActionCodeSettings, Auth, sendSignInLinkToEmail } from '@firebase/auth';
 import { expect, use } from 'chai';
 import {