refactor: add license header to JS files & format files (#12081)

modules/@angular/compiler-cli/integrationtest/webpack.config.js

@@ -1,10 +1,14 @@
+/**
+ * @license
+ * Copyright Google Inc. All Rights Reserved.
+ *
+ * Use of this source code is governed by an MIT-style license that can be
+ * found in the LICENSE file at https://angular.io/license
+ */
+
 module.exports = {
   target: 'node',
   entry: './test/all_spec.js',
-  output: {
-    filename: './all_spec.js'
-  },
-  resolve: {
-    extensions: ['.js']
-  },
+  output: {filename: './all_spec.js'},
+  resolve: {extensions: ['.js']},
 };