[feature] Add support for SameSite attribute in WSCookie #709
Description
The SameSite cookie attribute is widespread, see e.g. https://developer.mozilla.org/en-US/docs/Web/HTTP/Headers/Set-Cookie/SameSite#browser_compatibility.
It would be great if play-ws helped me consume SameSite attributes, e.g. by having a sameSite field on WSCookie.