[x] Must be possible to register a new car.

[X] Mustn't be possible to registe a car with an already existing plate. [x] Car must be registered as available by default.

• It must be possible to list all available cars.
• Must be possible to list all available cars by category name.
• Must be possible to list all available cars by brand.

• User don't need to be logged in to see car list.

• Must be possible to create a specification for a car.
• Must be possible to list all specifications.
• Must be possible to list all cars.

• Mustn't be able to create a specification for a inexistant car.
• Mustn't be able to create an already existing specification for the same car.

Must be possible to register a car image. Must be possible to liaist all cars.

Use multer for file uplaod.

User must be able to register more than one iamge per car. User responsible for registers must be an admin.

Must be possible to creatae a rent.

##RN Rent must have minimal duration of 24hr. Mustn't be possible to register a new rent if one already exists for the same user. Mustn't be possible to register a new rent if one already exists for the same car.