simplify VualtoTransactionId usage

[stefanovualto]

Why not just extend the request and response object through a "simple" middleware?

[somerobmitchell]

Do you have an idea of how to do this? The way it is done at the moment is so that the Id is present at the point of logging and is persisted for the length of the request.

[stefanovualto]

By extending the request object with a logger object who will be instantiated with is own Vualto-transactionId, who is also injected in the header of the response.

The idea will be to use req.logger() in the controllers