Investigate cross-site Set-Cookies

[eric-burel]

Is your feature request related to a problem? Please describe.
When the cookie
https://developer.mozilla.org/fr/docs/Web/HTTP/Headers/Set-Cookie/SameSite
Describe the solution you'd like
Possibility to configure the SameSite parameter + documentation on how to have the API and the frontend on different domain, eg for a shared API.

It can also affects app with a Meteor backend and a Next frontend.
Describe alternatives you've considered
Hosting on the same root domain should solve this issue.
Additional context
Add any other context or screenshots about the feature request here.