[new] security/py-omemo-dr

Hi ports@,

This is a new python library port, security/py-omemo-dr
It's Gajim's internal fork of security/py-axolotl which they have
re-written for internal omemo support.

It's needed for the update of net/gajim sent on another thread.

comments ? suggestions ? Ok to import ?

--
Paco Esteban.
0x5818130B8A6DBC03