- Introduced ModelContextMenuMixin to encapsulate shared methods for Lora and Checkpoint context menus.
- Updated CheckpointContextMenu to utilize the mixin for common actions and NSFW level handling.
- Simplified LoraContextMenu by integrating the mixin, removing redundant methods.
- Removed duplicated NSFW handling logic and centralized it in the mixin.
- Adjusted import/export statements to reflect the new structure and ensure proper functionality.
