Restructure the public API for server

pkg/analysis_server/lib/src/services/correction/fix.dart

 // Copyright (c) 2014, the Dart project authors.  Please see the AUTHORS file
 // 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.src.services.correction.fix;
 
-import 'package:analysis_server/edit/fix/fix_core.dart';
+import 'package:analysis_server/plugin/edit/fix/fix_core.dart';
 import 'package:analysis_server/src/plugin/server_plugin.dart';
 import 'package:analyzer/file_system/file_system.dart';
 import 'package:analyzer/src/generated/engine.dart';
 import 'package:analyzer/src/generated/error.dart';
 import 'package:analyzer/src/generated/java_engine.dart';
 import 'package:analyzer/src/generated/parser.dart';
 
 /**
  * Compute and return the fixes available for the given [error]. The error was
  * reported after it's source was analyzed in the given [context]. The [plugin]
@@ skipping 172 matching lines @@
   static const USE_CONST = const FixKind('USE_CONST', 50, "Change to constant");
   static const USE_EFFECTIVE_INTEGER_DIVISION = const FixKind(
       'USE_EFFECTIVE_INTEGER_DIVISION',
       50,
       "Use effective integer division ~/");
   static const USE_EQ_EQ_NULL =
       const FixKind('USE_EQ_EQ_NULL', 50, "Use == null instead of 'is Null'");
   static const USE_NOT_EQ_NULL =
       const FixKind('USE_NOT_EQ_NULL', 50, "Use != null instead of 'is! Null'");
 }