Migrate desktop_photo_search to top level (#1002)

desktop_photo_search/material/lib/src/unsplash/user.dart

@@ -0,0 +1,63 @@
+// Copyright 2019 The Flutter team. All rights reserved.
+// Use of this source code is governed by a BSD-style license that can be
+// found in the LICENSE file.
+
+import 'dart:convert';
+
+import 'package:built_value/built_value.dart';
+import 'package:built_value/serializer.dart';
+
+import '../serializers.dart';
+import 'links.dart';
+
+part 'user.g.dart';
+
+abstract class User implements Built<User, UserBuilder> {
+  factory User([void Function(UserBuilder)? updates]) = _$User;
+
+  User._();
+
+  @BuiltValueField(wireName: 'id')
+  String get id;
+
+  @BuiltValueField(wireName: 'updated_at')
+  String? get updatedAt;
+
+  @BuiltValueField(wireName: 'username')
+  String get username;
+
+  @BuiltValueField(wireName: 'name')
+  String get name;
+
+  @BuiltValueField(wireName: 'portfolio_url')
+  String? get portfolioUrl;
+
+  @BuiltValueField(wireName: 'bio')
+  String? get bio;
+
+  @BuiltValueField(wireName: 'location')
+  String? get location;
+
+  @BuiltValueField(wireName: 'total_likes')
+  int? get totalLikes;
+
+  @BuiltValueField(wireName: 'total_photos')
+  int? get totalPhotos;
+
+  @BuiltValueField(wireName: 'total_collections')
+  int? get totalCollections;
+
+  @BuiltValueField(wireName: 'links')
+  Links? get links;
+
+  String toJson() {
+    return json.encode(serializers.serializeWith(User.serializer, this));
+  }
+
+  static User? fromJson(String jsonString) {
+    return serializers.deserializeWith(
+        User.serializer, json.decode(jsonString));
+  }
+
+  static Serializer<User> get serializer => _$userSerializer;
+}