Consider adding Tink

[perezd]

This is Google's recommended library for multiple software platforms, would be a good idea to offer it easily to Bazel projects.

https://github.com/google/tink

[tholenst]

Tink comes with the own bazel configuration. It should not be needed to have something here.

If there is an issue using that, I would say that this is an issue of Tink; please report it there. Thank you!