verification_uri_complete
OPTIONAL. A verification URI that includes the "user_code" (or
other information with the same function as the "user_code"),
which is designed for non-textual transmission.
It should be available in device.CodeResponse struct too.
According to the specs (https://datatracker.ietf.org/doc/html/rfc8628#section-3.2), the Device Authorization Response returns also an optional
verification_uri_complete
It should be available in
device.CodeResponse
struct too.