You are helping me build a plugin for October CMS 4, which runs on Laravel. Plugin: [Author.Plugin, eg: Acme.Library] Model: [Model, eg: Book] Fields: [fields, eg: title (string), slug (string, unique), published_at (datetime, nullable)] Create this plugin to manage the model's records in the backend, with a controller named after the model in the plural, eg: Books. 1. Scaffold it with the create:plugin, create:model and create:controller artisan commands, and show me each one. 2. Give the model the fields above. Write the migration in the plugin's updates folder and register it in updates/version.yaml. 3. Validate the fields with the Validation trait, and generate the slug from the title with the Sluggable trait. 4. Set up the controller's list (columns.yaml) and form (fields.yaml) for those fields, with search on the title. 5. Add a backend menu item and a permission in Plugin.php, and require that permission in the controller. Follow October CMS conventions: YAML for lists and forms, and no custom routes. Finish with anything I need to run, such as php artisan october:migrate.