Fix buildbucket publishing errors. (#2325)

* Fix buildbucket publishing errors.

There were some errors with the version and the package name.

Bug: https://github.com/flutter/flutter/issues/115490

* Update package in example.

* Use buildbucket package name.
diff --git a/packages/buildbucket-dart/example/buildbucket_pb_example.dart b/packages/buildbucket-dart/example/buildbucket_pb_example.dart
index 61cdb50..a211f04 100644
--- a/packages/buildbucket-dart/example/buildbucket_pb_example.dart
+++ b/packages/buildbucket-dart/example/buildbucket_pb_example.dart
@@ -4,7 +4,7 @@
 
 import 'dart:convert';
 
-import 'package:buildbucket_proto/buildbucket_pb.dart';
+import 'package:buildbucket/buildbucket_pb.dart';
 
 void main() {
   // Create a BuildBucket build from a json string.
diff --git a/packages/buildbucket-dart/lib/buildbucket_pb.dart b/packages/buildbucket-dart/lib/buildbucket_pb.dart
index 39a2d43..8f57d75 100644
--- a/packages/buildbucket-dart/lib/buildbucket_pb.dart
+++ b/packages/buildbucket-dart/lib/buildbucket_pb.dart
@@ -2,6 +2,6 @@
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
-library buildbucket_pb;
+library buildbucket;
 
 export 'src/generated/go.chromium.org/luci/buildbucket/proto/build.pb.dart' show Build;
diff --git a/packages/buildbucket-dart/pubspec.yaml b/packages/buildbucket-dart/pubspec.yaml
index 7304318..bedd3e0 100644
--- a/packages/buildbucket-dart/pubspec.yaml
+++ b/packages/buildbucket-dart/pubspec.yaml
@@ -1,6 +1,6 @@
-name: buildbucket_proto
-description: LUCI Buildbucket protobufs.
-version: 0.0.1
+name: buildbucket
+description: LUCI Buildbucket library. Protos and utilities to communicate with LUCI buildbucket service.
+version: 1.0.0
 repository: https://github.com/flutter/cocoon/tree/main/packages/buildbucket-dart
 
 environment:
diff --git a/packages/buildbucket-dart/test/buildbucket_pb_test.dart b/packages/buildbucket-dart/test/buildbucket_pb_test.dart
index f395d60..0dc928b 100644
--- a/packages/buildbucket-dart/test/buildbucket_pb_test.dart
+++ b/packages/buildbucket-dart/test/buildbucket_pb_test.dart
@@ -2,7 +2,7 @@
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
-import 'package:buildbucket_proto/buildbucket_pb.dart';
+import 'package:buildbucket/buildbucket_pb.dart';
 import 'package:test/test.dart';
 
 Map<String, dynamic> buildJson = {