Fill Château de Versailles booking details

Give the visitor details for the cart already filled with add_to_cart on the official Château de Versailles ticket shop, as a guest (no account is created). The shop checks every email address with a 6-digit code it sends to that address, so this runs in two passes on the same browser: first with the email only, which makes the shop send the code and returns status email_code_sent; then again with the same email, the code from that email and the visitor's first and last name, which fills the guest form and returns status details_filled. Returns the fields the shop requires and whether each one is filled. It stops before payment: run complete_booking next. A wrong or expired code fails with an error that says to run the first pass again. An empty cart fails with an error that says to run add_to_cart first.