Mejoras y algunos cambios en los endpoints y relacionados

...va/com/uva/roomBooking/Controllers/BookingController.java

...java/com/uva/roomBooking/Controllers/HotelController.java

...ing/src/main/java/com/uva/roomBooking/Models/Booking.java

...ooking/src/main/java/com/uva/roomBooking/Models/Room.java

...java/com/uva/roomBooking/Repositories/RoomRepository.java

java/roomBooking/src/main/resources/application.properties