feat: Enhance Adventure and Collection Management

- Added support for multiple collections in AdventureSerializer, allowing adventures to be linked to multiple collections.
- Implemented validation to ensure collections belong to the current user during adventure creation and updates.
- Introduced a signal to update adventure publicity based on the public status of linked collections.
- Updated file permission checks to consider multiple collections when determining access rights.
- Modified AdventureImageViewSet and AttachmentViewSet to check access against collections instead of a single collection.
- Enhanced AdventureViewSet to support filtering and sorting adventures based on collections.
- Updated frontend components to manage collections more effectively, including linking and unlinking adventures from collections.
- Adjusted API endpoints and data structures to accommodate the new collections feature.
- Improved user experience with appropriate notifications for collection actions.

backend/server/adventures/managers.py

@@ -3,20 +3,15 @@ from django.db.models import Q
 
 class AdventureManager(models.Manager):
     def retrieve_adventures(self, user, include_owned=False, include_shared=False, include_public=False):
-        # Initialize the query with an empty Q object
         query = Q()
 
-        # Add owned adventures to the query if included
         if include_owned:
-            query |= Q(user_id=user.id)
+            query |= Q(user_id=user)
 
-        # Add shared adventures to the query if included
         if include_shared:
-            query |= Q(collection__shared_with=user.id)
+            query |= Q(collections__shared_with=user)
 
-        # Add public adventures to the query if included
         if include_public:
             query |= Q(is_public=True)
 
-        # Perform the query with the final Q object and remove duplicates
         return self.filter(query).distinct()