Add CookieServerCsrfTokenRepository

[edeandrea]

A cookie implementation of ServerCsrfTokenRepository (like CookieCsrfTokenRepository) is missing. In this implementation it would be nice to allow the setting of the domain as well.

[edeandrea]

I added PR 5245 for this.

[rwinch]

Thanks for creating this ticket and the PR! This is now merged into master. Please see the referenced commits for the polish that I applied