Support setting refresh token in cookie

[Jayfrown]

This commit is the result of cherry-picking the following commits on top
of the current master branch, resolving conflicts, making some minor
changes and rebasing the lot into a single commit:

c6f67b0
f9fbdf5
3267470

Resolved conflicts in:
DependencyInjection/Configuration.php
DependencyInjection/GesdinetJWTRefreshTokenExtension.php
EventListener/AttachRefreshTokenOnSuccessListener.php
README.md
Request/RequestRefreshToken.php
Resources/config/services.php
spec/EventListener/AttachRefreshTokenOnSuccessListenerSpec.php
spec/Request/RequestRefreshTokenSpec.php

[Jayfrown]

Thanks for reviewing @mbabker, I believe I've fixed the things you mentioned.

[Jayfrown]

Hey @markitosgv have you had a chance to look at this? Let me know if you would like to see some changes or if you have any other reservations

[CIT-SW]

Any news when this will be merged?

[CIT-SW]

@markitosgv
Hey there! We completely understand when an open source project can't get the amount of attention from the author that would be needed and we really appreciate you're work. Nevertheless it's a bit hard to figure out if we could actually use your package or not in our project as long as we can't tell if and when refresh token via cookie will be available (and if the package is going to be further maintained at a minimum level).
Hence, would you be so kind as to let us know if and when this PR can be merged? Of course, "no" is a valid answer as well, it would even be better to know that you are not going to merge this PR / maintain the package than not knowing anything about it. ;-)
Looking forward to your reply!

[markitosgv]

checked and merged ;-)