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

Relates to angular#9380

Author: ScottSWu

modules/@angular/common/index.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
+ */
+
 export * from './src/pipes';
 export * from './src/directives';
 export * from './src/forms-deprecated';

modules/@angular/common/src/common_directives.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 {Type} from '@angular/core';
 
 import {CORE_DIRECTIVES} from './directives';

modules/@angular/common/src/directives.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
+ */
+
 /**
  * @module
  * @description

modules/@angular/common/src/directives/core_directives.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 {Type} from '../facade/lang';
 
 import {NgClass} from './ng_class';

modules/@angular/common/src/directives/ng_class.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 {CollectionChangeRecord, Directive, DoCheck, ElementRef, IterableDiffer, IterableDiffers, KeyValueChangeRecord, KeyValueDiffer, KeyValueDiffers, OnDestroy, Renderer} from '@angular/core';
 
 import {StringMapWrapper, isListLikeIterable} from '../facade/collection';

modules/@angular/common/src/directives/ng_for.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 {ChangeDetectorRef, CollectionChangeRecord, DefaultIterableDiffer, Directive, DoCheck, EmbeddedViewRef, IterableDiffer, IterableDiffers, TemplateRef, TrackByFn, ViewContainerRef} from '@angular/core';
 
 import {BaseException} from '../facade/exceptions';

modules/@angular/common/src/directives/ng_if.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 {Directive, TemplateRef, ViewContainerRef} from '@angular/core';
 
 import {isBlank} from '../facade/lang';

modules/@angular/common/src/directives/ng_plural.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 {AfterContentInit, Attribute, ContentChildren, Directive, Input, QueryList, TemplateRef, ViewContainerRef} from '@angular/core';
 
 import {Map} from '../facade/collection';

modules/@angular/common/src/directives/ng_style.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 {Directive, DoCheck, ElementRef, KeyValueChangeRecord, KeyValueDiffer, KeyValueDiffers, Renderer} from '@angular/core';
 
 import {isBlank, isPresent} from '../facade/lang';

modules/@angular/common/src/directives/ng_switch.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 {Directive, Host, TemplateRef, ViewContainerRef} from '@angular/core';
 
 import {ListWrapper, Map} from '../facade/collection';