TF-1204 Add FirebaseRegistration/get method/response and write unit test

fcm/lib/method/get/firebase_registration_get_method.dart

@@ -0,0 +1,35 @@
+import 'package:fcm/utils/firebase_utils.dart';
+import 'package:jmap_dart_client/http/converter/id_converter.dart';
+import 'package:jmap_dart_client/http/converter/properties_converter.dart';
+import 'package:jmap_dart_client/jmap/core/capability/capability_identifier.dart';
+import 'package:jmap_dart_client/jmap/core/method/request/get_method.dart';
+import 'package:jmap_dart_client/jmap/core/request/request_invocation.dart';
+import 'package:jmap_dart_client/jmap/core/request/result_reference.dart';
+import 'package:json_annotation/json_annotation.dart';
+
+part 'firebase_registration_get_method.g.dart';
+
+@IdConverter()
+@PropertiesConverter()
+@JsonSerializable(explicitToJson: true)
+class FirebaseRegistrationGetMethod extends GetMethodNoNeedAccountId {
+
+  FirebaseRegistrationGetMethod() : super();
+
+  @override
+  MethodName get methodName => MethodName('FirebaseRegistration/get');
+
+  @override
+  Set<CapabilityIdentifier> get requiredCapabilities => {
+    CapabilityIdentifier.jmapCore,
+    FirebaseUtils.capabilityLinagoraFirebase,
+  };
+
+  @override
+  List<Object?> get props => [methodName, ids, requiredCapabilities];
+
+  factory FirebaseRegistrationGetMethod.fromJson(Map<String, dynamic> json) => _$FirebaseRegistrationGetMethodFromJson(json);
+
+  @override
+  Map<String, dynamic> toJson() => _$FirebaseRegistrationGetMethodToJson(this);
+}

fcm/lib/method/get/firebase_registration_get_response.dart

@@ -0,0 +1,31 @@
+import 'package:fcm/model/firebase_registration.dart';
+import 'package:jmap_dart_client/http/converter/id_converter.dart';
+import 'package:jmap_dart_client/http/converter/state_converter.dart';
+import 'package:jmap_dart_client/jmap/core/id.dart';
+import 'package:jmap_dart_client/jmap/core/method/response/get_response.dart';
+import 'package:json_annotation/json_annotation.dart';
+
+part 'firebase_registration_get_response.g.dart';
+
+@StateConverter()
+@IdConverter()
+@JsonSerializable(explicitToJson: true)
+class FirebaseRegistrationGetResponse extends GetResponseNoAccountId<FirebaseRegistration> {
+
+  FirebaseRegistrationGetResponse(
+    List<FirebaseRegistration> list,
+    List<Id>? notFound
+  ) : super(list, notFound);
+
+  factory FirebaseRegistrationGetResponse.fromJson(Map<String, dynamic> json) =>
+    _$FirebaseRegistrationGetResponseFromJson(json);
+
+  static FirebaseRegistrationGetResponse deserialize(Map<String, dynamic> json) {
+    return FirebaseRegistrationGetResponse.fromJson(json);
+  }
+
+  Map<String, dynamic> toJson() => _$FirebaseRegistrationGetResponseToJson(this);
+
+  @override
+  List<Object?> get props => [list, notFound];
+}