User adds an elephpant for trade

[verschoof]

A Shepherd is the master of their Herd. If they wish to give up one (or more) of their Herd for adoption, they will trigger a GiveUpForAdoption command.

• The ElePHPant is still part of the Herd, but no longer available for abandonment (the possibility for adoption must first be cancelled)
• There might be more information required before this ElePHPant is properly available for trade, like: quality, in which actual batch it was created, location...
• Quite possible this means the addition of the \Elewant\Trading domain in the code.