Restructure the public API for server

pkg/analysis_server/lib/plugin/edit/utilities/change_builder_dart.dart

Index: pkg/analysis_server/lib/plugin/edit/utilities/change_builder_dart.dart
diff --git a/pkg/analysis_server/lib/utilities/change_builder_dart.dart b/pkg/analysis_server/lib/plugin/edit/utilities/change_builder_dart.dart
similarity index 97%
rename from pkg/analysis_server/lib/utilities/change_builder_dart.dart
rename to pkg/analysis_server/lib/plugin/edit/utilities/change_builder_dart.dart
index 74ca528d5b838469e0bb2b398c21d444085995fa..e79204babc370f1fa8582e57eb746a9004339de4 100644
--- a/pkg/analysis_server/lib/utilities/change_builder_dart.dart
+++ b/pkg/analysis_server/lib/plugin/edit/utilities/change_builder_dart.dart
@@ -2,10 +2,10 @@
 // for details. All rights reserved. Use of this source code is governed by a
 // BSD-style license that can be found in the LICENSE file.
 
-library analysis_server.utilities.change_builder_dart;
+library analysis_server.plugin.edit.utilities.change_builder_dart;
 
+import 'package:analysis_server/plugin/edit/utilities/change_builder_core.dart';
 import 'package:analysis_server/src/utilities/change_builder_dart.dart';
-import 'package:analysis_server/utilities/change_builder_core.dart';
 import 'package:analyzer/src/generated/ast.dart';
 import 'package:analyzer/src/generated/element.dart';
 import 'package:analyzer/src/generated/engine.dart';