chore(lint): Added license headers to most TypeScript files

Relates to #9380

modules/@angular/examples/core/ts/bootstrap/bootstrap.ts

@@ -1,3 +1,11 @@
+/**
+ * @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
+ */
+
 import {Component} from '@angular/core';
 import {bootstrap} from '@angular/platform-browser-dynamic';
 

modules/@angular/examples/core/ts/metadata/metadata.ts

@@ -1,3 +1,11 @@
+/**
+ * @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
+ */
+
 import {Attribute, Component, Directive, Pipe} from '@angular/core';
 
 var CustomDirective: Function;

modules/@angular/examples/core/ts/platform/platform.ts

@@ -1,3 +1,11 @@
+/**
+ * @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
+ */
+
 import {Component, ReflectiveInjector, coreLoadAndBootstrap, createPlatform} from '@angular/core';
 import {BROWSER_APP_PROVIDERS, BROWSER_PLATFORM_PROVIDERS} from '@angular/platform-browser';
 

modules/@angular/examples/core/ts/prod_mode/my_component.ts

@@ -1,3 +1,11 @@
+/**
+ * @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
+ */
+
 import {Component} from '@angular/core';
 
 @Component({selector: 'my-component', template: '<h1>My Component</h1>'})

modules/@angular/examples/core/ts/prod_mode/prod_mode_example.ts

@@ -1,3 +1,11 @@
+/**
+ * @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
+ */
+
 // #docregion enableProdMode
 import {enableProdMode} from '@angular/core';
 import {bootstrap} from '@angular/platform-browser-dynamic';