Add https://foss.heptapod.net to "Resources to Give Up GitHub"

[Franck Bret]

Hello,

We fully support your Give Up Github action and obviously FOSS!

Can you add https://foss.heptapod.net to "Resources to Give Up GitHub" 
section?

https://foss.heptapod.net is a European software platform that supports 
Git (It's a friendly fork of Gitlab) and as a bonus we have added 
support for Mercurial too!

We already host important projects like Mercurial-scm, Pypy, Xemacs to 
cite a few and obviously Heptapod itself.

We offer free hosting for FOSS projects, see 
https://foss.heptapod.net/heptapod/foss.heptapod.net for details on how 
to submit an hosting request.

Do not hesitate to ping me if you need more informations, logo or whatever.

Regards, and #GiveUpGithub!

Franck