added pagination to group and batch detail screens

lib/screens/groups/controllers/group_controller.dart

@@ -8,6 +8,7 @@ import 'package:qpay/screens/groups/models/recipient_group_model.dart';
 class GroupScreenModel {
   List<RecipientGroup> groups = [];
   List<RecipientGroupMember> members = [];
+  PageableModel? membersPage;
   bool isLoading = false;
   bool isLoadingMore = false;
   String? errorMessage;
@@ -141,6 +142,7 @@ class GroupController extends ChangeNotifier {
         '/recipient-groups/members?recipientGroupId=$groupId',
       );
       final response = _unwrap(raw);
+      model.membersPage = PageableModel.fromJson(response);
       final List<dynamic> content;
       if (response is List) {
         content = response;