Hello!

Here is a patch to add yubikey-oath-dmenu, a handy way to get OATH codes from a Yubikey with a dmenu interface. I use it all the time (though through rofi). It seemed the best place was in the security-token module with similar yubikey packages. This is written in python but meant to run as a program rather than used as a library, so I called it without a python- prefix (and it runs with just non-propagated inputs).

Thanks!
John