Create Comprehensive Tests for Booking App

1. Test Booking Creation (POST):

- [x] Verify successful creation and the time conflict validation fails if another booking exists in the requested time slot for the same room.

- [x] Test successful creation when recurrence_rule is present (optional validation).

2: Test Admin Retrieval (GET /api/bookings):

- [x] Test access control (only Admin succeeds).

- [x] Test all filtering options (room_id, date, visitor_name, visitor_email).

3: Test Visitor Search (GET /api/bookings/search):

- [x] Test successful search only when visitor_email is provided.

- [x] Test that no other filters are allowed.

4: Test Update (PUT /api/bookings/{id}):

- [x] Test successful reschedule (time update).

- [x] Verify time conflict validation is checked upon update.

5: Test Deletion (DELETE /api/bookings/{id}):

- [x] Verify the status changes to CANCELLED and the cancel_reason is recorded.

- [x] Verify only the user with the matching visitor_email can cancel (optional security check).