feat: add new_count field to notification creation and fix trailing whitespace

- Set model['new_count'] to 1337 when creating a new notification in NotificationService.create
- Remove trailing whitespace on empty line in channel message notification handler

src/snek/service/notification.py

@@ -21,6 +21,7 @@ class NotificationService(BaseService):
         model["object_type"] = object_type
         model["user_uid"] = user_uid
         model["message"] = message
+        model['new_count'] = 1337
         if await self.save(model):
             return model
         raise Exception(f"Failed to create notification: {model.errors}.")