Consider implementing Careful Resume

[mxinden]

@larseggert @martinthomson thoughts on adding Careful Resume to Neqo?

https://datatracker.ietf.org/doc/draft-ietf-tsvwg-careful-resume/

[larseggert]

Yes, depending on how much work this would be.

[Finic8]

I'm working on a proof of concept implementation over here: https://github.com/Finic8/neqo/tree/cr

It' is relatively self contained, so not much needs to be changed overall.

[larseggert]

Thanks for working on this! One general suggestion is to rebase onto our upstream main regularly. That way, git usually does it without intervention; if you fall behind too much, you'll need to manually rebase which can be a bit of a pain.