Bookmarks creation and fetching, advanced query search

storage/mongoStore.go

@@ -64,7 +64,7 @@ func (s Store[T]) GetMany(ctx context.Context, filter *bson.D) ([]*T, error) {
 		log.Println("Error fetching items: ", err)
 		return nil, err
 	}
-	var res []*T
+	res := []*T{}
 	err = cur.All(ctx, &res)
 	if err != nil {
 		log.Println("Error collecting items to slice: ", err)