What are the differences between using setupListOperation() and setup() for Widget::add()

1. Scope of the Widget:
- `setupListOperation()`: Widgets added here will only be loaded on the List operation page.
- `setup()`: Widgets added here will be loaded on all CRUD operations (List, Create, Update, etc.).

2. Timing of Widget Addition:
- `setupListOperation()`: Widgets are added after the list operation setup is complete, so you can customize the list view based on the current state.
- `setup()`: Widgets are added during the general CRUD setup, before any specific operation setup.

3. Flexibility:
- `setupListOperation()`: Allows you to add widgets specific to the list operation, giving you more control and flexibility.
- `setup()`: Provides a more global approach, where you can add widgets that should be present across all CRUD operations.

4. Maintainability:
- `setupListOperation()`: Keeps the list operation-specific customizations isolated, making the code more modular and easier to maintain.
- `setup()`: Centralizes the widget additions, which can be more convenient if you have a small number of widgets that should be present on all pages.

In summary, the choice between `setupListOperation()` and `setup()` for adding widgets depends on your specific requirements and the scope of the customizations you need to make. If you have list operation-specific widgets, it's generally recommended to use `setupListOperation()` to keep your code more organized and maintainable. If you have global widgets that should be present across all CRUD operations, `setup()` can be a more convenient option.