Support for SameSite attribute. #65
Description
This is a feature request.
As discussed in #16, currently this library doesn't respect the SameSite attribute of a cookie. My assumption is this is due to Cookie class in dart:io lacks sameSite property.
However, in Dart 3.1 released last week, sameSite property has finally been added (changelog). So it may be feasible (and not to mention very useful) to support SameSite attribute in this library.