perf(dart/transform) Restructure transform to independent phases

Update summary:
- Removes the need for resolution, gaining transform speed at the cost
  of some precision and ability to detect errors
- Generates type registrations in the package alongside their declarations
- Ensures that line numbers do not change in transformed user code

modules/angular2/test/transform/simple_annotation_files/expected/bar.ngDeps.dart

@@ -0,0 +1,16 @@
+library bar;
+
+import 'bar.dart';
+import 'package:angular2/src/core/annotations/annotations.dart';
+
+bool _visited = false;
+void setupReflection(reflector) {
+  if (_visited) return;
+  _visited = true;
+  reflector
+    ..registerType(MyComponent, {
+      "factory": () => new MyComponent(),
+      "parameters": const [],
+      "annotations": const [const Component(selector: '[soup]')]
+    });
+}

modules/angular2/test/transform/simple_annotation_files/expected/index.bootstrap.dart

@@ -1,14 +0,0 @@
-library angular2.src.transform.generated;
-
-import 'package:angular2/src/reflection/reflection.dart' show reflector;
-import 'bar.dart' as i0;
-import 'package:angular2/src/core/annotations/annotations.dart' as i1;
-
-setupReflection() {
-  reflector
-    ..registerType(i0.MyComponent, {
-      "factory": () => new i0.MyComponent(),
-      "parameters": const [const []],
-      "annotations": const [const i1.Component(selector: '[soup]')]
-    });
-}

modules/angular2/test/transform/simple_annotation_files/expected/index.dart

@@ -2,12 +2,12 @@ library web_foo;
 
 import 'package:angular2/src/core/application.dart';
 import 'package:angular2/src/reflection/reflection.dart';
-import 'index.bootstrap.dart' as ngStaticInit;
+import 'index.ngDeps.dart' as ngStaticInit;
 import 'package:angular2/src/reflection/reflection_capabilities.dart';
 import 'bar.dart';
 
 void main() {
-  ngStaticInit.setupReflection();
+  ngStaticInit.setupReflection(reflector);
   reflector.reflectionCapabilities = new ReflectionCapabilities();
   bootstrap(MyComponent);
 }

modules/angular2/test/transform/simple_annotation_files/expected/index.ngDeps.dart

@@ -0,0 +1,15 @@
+library web_foo;
+
+import 'index.dart';
+import 'package:angular2/src/core/application.dart';
+import 'package:angular2/src/reflection/reflection.dart';
+import 'package:angular2/src/reflection/reflection_capabilities.dart';
+import 'bar.dart';
+import 'bar.ngDeps.dart' as i0;
+
+bool _visited = false;
+void setupReflection(reflector) {
+  if (_visited) return;
+  _visited = true;
+  i0.setupReflection(reflector);
+}