fix(angular): Re-add references to tns-core-modules.d.ts (#6949)

They were removed in #6927 because we thought they were
unnecessary.

tns-core-modules/application/application.d.ts

@@ -2,7 +2,9 @@
  * Contains the application abstraction with all related methods.
  * @module "application"
  */ /** */
+
 /// <reference path="../nativescript-error.d.ts" />
+/// <reference path="../tns-core-modules.d.ts" />
 
 import { NavigationEntry, View, Observable, EventData } from "../ui/frame";
 

tns-core-modules/ui/core/view/view.d.ts

@@ -2,6 +2,8 @@
  * @module "ui/core/view"
  */ /** */
 
+/// <reference path="../../../tns-core-modules.d.ts" />
+
 import { ViewBase, Property, InheritedProperty, EventData, Color } from "../view-base";
 import { Animation, AnimationDefinition, AnimationPromise } from "../../animation";
 import { HorizontalAlignment, VerticalAlignment, Visibility, Length, PercentLength } from "../../styling/style-properties";

tns-core-modules/ui/page/page.d.ts

@@ -3,6 +3,8 @@
  * @module "ui/page"
  */ /** */
 
+/// <reference path="../../tns-core-modules.d.ts" />
+
 import { ShownModallyData } from "../core/view";
 import { ContentView, EventData, Property, Color, CssProperty, Style } from "../content-view";
 import { Frame } from "../frame";