feat(transformers): provide a flag to disable inlining views

Add a flag to allow a user to disable inlining css/html content into the views.

Closes #2658

modules/angular2/test/transform/directive_processor/expected/hello.ng_deps.dart

@@ -0,0 +1,25 @@
+library examples.src.hello_world.index_common_dart.ng_deps.dart;
+
+import 'hello.dart';
+import 'package:angular2/angular2.dart'
+    show bootstrap, Component, Directive, View, NgElement;
+
+var _visited = false;
+void initReflector(reflector) {
+  if (_visited) return;
+  _visited = true;
+  reflector
+    ..registerType(HelloCmp, {
+      'factory': () => new HelloCmp(),
+      'parameters': const [],
+      'annotations': const [
+        const Component(selector: 'hello-app'),
+        const View(
+            template: r'''{{greeting}}''',
+            styles: const [
+          r'''.greeting { .color: blue; }''',
+          r'''.hello { .color: red; }''',
+        ])
+      ]
+    });
+}