Add support for two new standalone site content modules in the admin dashboard:
hotel groups and vehicle options. This commit includes:
- Added TypeScript types for HotelGroup and VehicleOption, extended SiteConfig and SiteModule enum
- Updated admin utilities (primary key lookup, empty drafts, payload compaction) for the new modules
- Added management UI panels and editors in the structure page for configuring the new modules
- Adjusted module rail styling and interactive states for consistent UI across the admin
- Updated ctaBanners type definition to include missing sortOrder, createdAt, and updatedAt fields
- Updated API and admin documentation to cover the new modules' CRUD endpoints and field contracts
This commit adds the complete admin workflow for managing homepage curated route subgroups:
- Add `RouteSection` type and extend `SiteConfig`/`SiteModule` to support the new module
- Create all required admin components: panel, editors, product picker, and utility functions
- Update admin utilities and API types to handle routeSections CRUD operations
- Update documentation to include the new routeSections API contract
- Add supporting CSS styles for the new UI elements
