Add Ricin tox client ebuild

[eternal-sorrow]

Add please to this overlay a ebuild for Ricin tox client, written with Vala/GTK3. It is mentioned on the tox project main site. More info on it's own site and github repo.

[eternal-sorrow]

is this repo maintained?

[optimumtact]

No

[Esption]

@eternal-sorrow if you're still interested in it I did write an ebuild for Ricin https://github.com/Esption/esption-overlay There does seem to be a bug with GTK+-3.20 atm though (RicinApp/Ricin#142) so YMMV I guess.