Refactor ActivityCard UI and improve voting functionality

- Updated ActivityCard layout for better visual consistency and responsiveness.
- Simplified the category badge and adjusted styles for better readability.
- Enhanced the voting section with a progress bar and improved button designs.
- Added a new method in Activity model to check if all trip participants approved an activity.
- Improved error handling and validation in ActivityRepository for voting and fetching activities.
- Implemented pagination in ActivityPlacesService for activity searches.
- Removed outdated scripts for cleaning up duplicate images.

lib/blocs/activity/approved_activities/approved_activity_state.dart

@@ -0,0 +1,76 @@
+import 'package:equatable/equatable.dart';
+import '../../../models/activity.dart';
+
+/// States pour les activités approuvées par tous les participants
+abstract class ApprovedActivityState extends Equatable {
+  const ApprovedActivityState();
+
+  @override
+  List<Object?> get props => [];
+}
+
+/// État initial
+class ApprovedActivityInitial extends ApprovedActivityState {
+  const ApprovedActivityInitial();
+}
+
+/// État de chargement
+class ApprovedActivityLoading extends ApprovedActivityState {
+  const ApprovedActivityLoading();
+}
+
+/// État de recherche
+class ApprovedActivitySearching extends ApprovedActivityState {
+  const ApprovedActivitySearching();
+}
+
+/// État avec les activités approuvées chargées
+class ApprovedActivityLoaded extends ApprovedActivityState {
+  final List<Activity> approvedActivities;
+  final List<String> tripParticipants;
+
+  const ApprovedActivityLoaded({
+    required this.approvedActivities,
+    required this.tripParticipants,
+  });
+
+  @override
+  List<Object?> get props => [approvedActivities, tripParticipants];
+
+  /// Créer une copie avec des modifications
+  ApprovedActivityLoaded copyWith({
+    List<Activity>? approvedActivities,
+    List<String>? tripParticipants,
+  }) {
+    return ApprovedActivityLoaded(
+      approvedActivities: approvedActivities ?? this.approvedActivities,
+      tripParticipants: tripParticipants ?? this.tripParticipants,
+    );
+  }
+}
+
+/// État avec résultats de recherche approuvées
+class ApprovedActivitySearchResults extends ApprovedActivityState {
+  final List<Activity> results;
+  final String query;
+  final List<String> tripParticipants;
+
+  const ApprovedActivitySearchResults({
+    required this.results,
+    required this.query,
+    required this.tripParticipants,
+  });
+
+  @override
+  List<Object?> get props => [results, query, tripParticipants];
+}
+
+/// État d'erreur
+class ApprovedActivityError extends ApprovedActivityState {
+  final String message;
+
+  const ApprovedActivityError(this.message);
+
+  @override
+  List<Object?> get props => [message];
+}