Yunohost package

After Debian package (#200 (closed), !267 (merged)), it will be time for a Yunohost package, the most wished packaging within the current Ğ1 community. This packaging should insist on ease of use. Most "admin" (smith) operations are onchain and do not require a dedicated tool except rotate_keys. It would be nice to call it automatically and expose the session keys in the yunohost admin interface so that people can simply call set_session_keys on it.

To upload designs, you'll need to enable LFS and have an admin enable hashed storage. More information