feat: Implement group management with BLoC pattern; add GroupBloc, GroupRepository, and related models

NOT FUNCTIONNAL

lib/blocs/group/group_event.dart

@@ -1,5 +1,6 @@
 import 'package:equatable/equatable.dart';
 import '../../data/models/group.dart';
+import '../../data/models/group_member.dart';
 
 abstract class GroupEvent extends Equatable {
   const GroupEvent();
@@ -8,64 +9,89 @@ abstract class GroupEvent extends Equatable {
   List<Object?> get props => [];
 }
 
-class GroupLoadRequested extends GroupEvent {
+// NOUVEAU : Charger les groupes par userId
+class LoadGroupsByUserId extends GroupEvent {
   final String userId;
 
-  const GroupLoadRequested({required this.userId});
+  const LoadGroupsByUserId(this.userId);
 
   @override
   List<Object?> get props => [userId];
 }
 
-class GroupCreateRequested extends GroupEvent {
+// Charger les groupes d'un voyage (conservé pour compatibilité)
+class LoadGroupsByTrip extends GroupEvent {
+  final String tripId;
+
+  const LoadGroupsByTrip(this.tripId);
+
+  @override
+  List<Object?> get props => [tripId];
+}
+
+// Créer un groupe simple
+class CreateGroup extends GroupEvent {
   final Group group;
 
-  const GroupCreateRequested({required this.group});
+  const CreateGroup(this.group);
 
   @override
   List<Object?> get props => [group];
 }
 
-class GroupUpdateRequested extends GroupEvent {
+// Créer un groupe avec ses membres
+class CreateGroupWithMembers extends GroupEvent {
   final Group group;
+  final List<GroupMember> members;
 
-  const GroupUpdateRequested({required this.group});
+  const CreateGroupWithMembers({
+    required this.group,
+    required this.members,
+  });
 
   @override
-  List<Object?> get props => [group];
+  List<Object?> get props => [group, members];
 }
 
-class GroupDeleteRequested extends GroupEvent {
+// Ajouter un membre
+class AddMemberToGroup extends GroupEvent {
+  final String groupId;
+  final GroupMember member;
+
+  const AddMemberToGroup(this.groupId, this.member);
+
+  @override
+  List<Object?> get props => [groupId, member];
+}
+
+// Supprimer un membre
+class RemoveMemberFromGroup extends GroupEvent {
+  final String groupId;
+  final String userId;
+
+  const RemoveMemberFromGroup(this.groupId, this.userId);
+
+  @override
+  List<Object?> get props => [groupId, userId];
+}
+
+// Mettre à jour un groupe
+class UpdateGroup extends GroupEvent {
+  final String groupId;
+  final Group group;
+
+  const UpdateGroup(this.groupId, this.group);
+
+  @override
+  List<Object?> get props => [groupId, group];
+}
+
+// Supprimer un groupe
+class DeleteGroup extends GroupEvent {
   final String groupId;
 
-  const GroupDeleteRequested({required this.groupId});
+  const DeleteGroup(this.groupId);
 
   @override
   List<Object?> get props => [groupId];
-}
-
-class GroupMemberAddRequested extends GroupEvent {
-  final String groupId;
-  final String memberId;
-
-  const GroupMemberAddRequested({
-    required this.groupId,
-    required this.memberId,
-  });
-
-  @override
-  List<Object?> get props => [groupId, memberId];
-}
-
-class GroupMemberRemoveRequested extends GroupEvent {
-  final String groupId;
-  final String memberId;
-
-  const GroupMemberRemoveRequested({
-    required this.groupId,
-    required this.memberId,
-  });
-
-  @override
-  List<Object?> get props => [groupId, memberId];
-}
+}