feat: add recurring bookings feature with related handlers and services

- Introduced recurring booking groups with the ability to create and cancel them.
- Added database migrations for recurring bookings, including new tables and relationships.
- Implemented handlers for creating and canceling recurring bookings in the admin booking module.
- Enhanced existing booking services to support recurring bookings logic.
- Updated API contract to include new schemas for recurring bookings.
- Refactored existing code for improved readability and maintainability.

apps/frontend/src/features/onboard/components/steps/plan-select-step.tsx

@@ -13,6 +13,7 @@ const FEATURE_LABELS: Record<string, string> = {
   onlinePayments: 'Pagos online',
   advancedReports: 'Reportes avanzados',
   whatsappReminders: 'Recordatorios WhatsApp',
+  fixedSlots: 'Turnos fijos',
 };
 
 export function PlanSelectStep({ form, plans }: PlanSelectStepProps) {
@@ -24,6 +25,7 @@ export function PlanSelectStep({ form, plans }: PlanSelectStepProps) {
     'onlinePayments',
     'advancedReports',
     'whatsappReminders',
+    'fixedSlots',
   ] as const;
 
   return (