Merge flutter_goldens_client into flutter_goldens (#141900)

This is part 1 of a broken down version of the #140101 refactor.

packages/flutter/pubspec.yaml

@@ -33,6 +33,7 @@ dev_dependencies:
   async: 2.11.0 # THIS LINE IS AUTOGENERATED - TO UPDATE USE "flutter update-packages --force-upgrade"
   boolean_selector: 2.1.1 # THIS LINE IS AUTOGENERATED - TO UPDATE USE "flutter update-packages --force-upgrade"
   clock: 1.1.1 # THIS LINE IS AUTOGENERATED - TO UPDATE USE "flutter update-packages --force-upgrade"
+  crypto: 3.0.3 # THIS LINE IS AUTOGENERATED - TO UPDATE USE "flutter update-packages --force-upgrade"
   file: 7.0.0 # THIS LINE IS AUTOGENERATED - TO UPDATE USE "flutter update-packages --force-upgrade"
   matcher: 0.12.16+1 # THIS LINE IS AUTOGENERATED - TO UPDATE USE "flutter update-packages --force-upgrade"
   path: 1.9.0 # THIS LINE IS AUTOGENERATED - TO UPDATE USE "flutter update-packages --force-upgrade"
@@ -44,6 +45,7 @@ dev_dependencies:
   string_scanner: 1.2.0 # THIS LINE IS AUTOGENERATED - TO UPDATE USE "flutter update-packages --force-upgrade"
   term_glyph: 1.2.1 # THIS LINE IS AUTOGENERATED - TO UPDATE USE "flutter update-packages --force-upgrade"
   test_api: 0.6.1 # THIS LINE IS AUTOGENERATED - TO UPDATE USE "flutter update-packages --force-upgrade"
+  typed_data: 1.3.2 # THIS LINE IS AUTOGENERATED - TO UPDATE USE "flutter update-packages --force-upgrade"
   vm_service: 13.0.0 # THIS LINE IS AUTOGENERATED - TO UPDATE USE "flutter update-packages --force-upgrade"
 
-# PUBSPEC CHECKSUM: 27ab
+# PUBSPEC CHECKSUM: aa0d

packages/flutter/test_private/test/pubspec.yaml

@@ -41,8 +41,10 @@ dev_dependencies:
     sdk: flutter
   fake_async: 1.3.1
 
+  crypto: 3.0.3 # THIS LINE IS AUTOGENERATED - TO UPDATE USE "flutter update-packages --force-upgrade"
   file: 7.0.0 # THIS LINE IS AUTOGENERATED - TO UPDATE USE "flutter update-packages --force-upgrade"
   platform: 3.1.4 # THIS LINE IS AUTOGENERATED - TO UPDATE USE "flutter update-packages --force-upgrade"
   process: 5.0.2 # THIS LINE IS AUTOGENERATED - TO UPDATE USE "flutter update-packages --force-upgrade"
+  typed_data: 1.3.2 # THIS LINE IS AUTOGENERATED - TO UPDATE USE "flutter update-packages --force-upgrade"
 
-# PUBSPEC CHECKSUM: 4e1f
+# PUBSPEC CHECKSUM: 3680

packages/flutter_goldens/lib/flutter_goldens.dart

@@ -8,11 +8,11 @@ import 'dart:io' as io show OSError, SocketException;
 import 'package:file/file.dart';
 import 'package:file/local.dart';
 import 'package:flutter/foundation.dart';
-import 'package:flutter_goldens_client/skia_client.dart';
 import 'package:flutter_test/flutter_test.dart';
 import 'package:platform/platform.dart';
 
-export 'package:flutter_goldens_client/skia_client.dart';
+import 'skia_client.dart';
+export 'skia_client.dart';
 
 // If you are here trying to figure out how to use golden files in the Flutter
 // repo itself, consider reading this wiki page:

packages/flutter_goldens/pubspec.yaml

@@ -12,8 +12,7 @@ dependencies:
     sdk: flutter
   flutter_test:
     sdk: flutter
-  flutter_goldens_client:
-    path: ../flutter_goldens_client
+  crypto: 3.0.3
   file: 7.0.0
   meta: 1.11.0
   platform: 3.1.4
@@ -24,7 +23,6 @@ dependencies:
   characters: 1.3.0 # THIS LINE IS AUTOGENERATED - TO UPDATE USE "flutter update-packages --force-upgrade"
   clock: 1.1.1 # THIS LINE IS AUTOGENERATED - TO UPDATE USE "flutter update-packages --force-upgrade"
   collection: 1.18.0 # THIS LINE IS AUTOGENERATED - TO UPDATE USE "flutter update-packages --force-upgrade"
-  crypto: 3.0.3 # THIS LINE IS AUTOGENERATED - TO UPDATE USE "flutter update-packages --force-upgrade"
   fake_async: 1.3.1 # THIS LINE IS AUTOGENERATED - TO UPDATE USE "flutter update-packages --force-upgrade"
   leak_tracker: 10.0.1 # THIS LINE IS AUTOGENERATED - TO UPDATE USE "flutter update-packages --force-upgrade"
   leak_tracker_flutter_testing: 2.0.3 # THIS LINE IS AUTOGENERATED - TO UPDATE USE "flutter update-packages --force-upgrade"

packages/flutter_goldens_client/pubspec.yaml

-name: flutter_goldens_client
-
-environment:
-  sdk: '>=3.2.0-0 <4.0.0'
-
-dependencies:
-  # To update these, use "flutter update-packages --force-upgrade".
-  crypto: 3.0.3
-  file: 7.0.0
-  platform: 3.1.4
-  process: 5.0.2
-
-  collection: 1.18.0 # THIS LINE IS AUTOGENERATED - TO UPDATE USE "flutter update-packages --force-upgrade"
-  meta: 1.11.0 # THIS LINE IS AUTOGENERATED - TO UPDATE USE "flutter update-packages --force-upgrade"
-  path: 1.9.0 # THIS LINE IS AUTOGENERATED - TO UPDATE USE "flutter update-packages --force-upgrade"
-  typed_data: 1.3.2 # THIS LINE IS AUTOGENERATED - TO UPDATE USE "flutter update-packages --force-upgrade"
-
-dartdoc:
-  # Exclude this package from the hosted API docs.
-  nodoc: true
-
-# PUBSPEC CHECKSUM: c72e