Adding Angular and dependent packages for testing

third_party/pkg/angular/lib/angular.dart

+/**
+ * Angular is a framework for building single page web applications.
+ *
+ * Further reading:
+ *
+ *   - AngularJS [Overview](http://www.angularjs.org)
+ *   - [Tutorial](https://github.com/angular/angular.dart.tutorial/wiki)
+ *   - [Mailing List](http://groups.google.com/d/forum/angular-dart?hl=en)
+ *
+ */
+library angular;
+
+import 'dart:html' as dom;
+import 'dart:js';
+import 'package:di/di.dart';
+import 'package:di/dynamic_injector.dart';
+
+import 'package:angular/core/module.dart';
+import 'package:angular/core_dom/module.dart';
+import 'package:angular/directive/module.dart';
+import 'package:angular/filter/module.dart';
+import 'package:angular/perf/module.dart';
+import 'package:angular/routing/module.dart';
+import 'package:js/js.dart' as js;
+
+export 'package:di/di.dart';
+export 'package:angular/core/module.dart';
+export 'package:angular/core_dom/module.dart';
+export 'package:angular/core/parser/parser_library.dart';
+export 'package:angular/directive/module.dart';
+export 'package:angular/filter/module.dart';
+export 'package:angular/routing/module.dart';
+
+part 'bootstrap.dart';
+part 'introspection.dart';