TF-2298 Update expires time when old token has expired

Signed-off-by: dab246 <tdvu@linagora.com>
(cherry picked from commit fb26afe8f52df6e16476aea8a68f9f92c5c4b001)

fcm/lib/model/fcm_token.dart

@@ -0,0 +1,12 @@
+
+import 'package:equatable/equatable.dart';
+
+class FcmToken with EquatableMixin {
+
+  final String value;
+
+  FcmToken(this.value);
+
+  @override
+  List<Object?> get props => [value];
+}