Butcher autostash

[Tenoji]

Real straightforward, autostash for the butcher command.
Not high priority, but considering that skin has autostash code, and butcher doesn't it's kind of awkward. I either have to transport, and eat a 30 second roundtime pretty much guaranteed, or setup a spam-fest of a trigger.

[Maina]

If you're holding a container while butchering, the meat will go inside it, much like foraging. The fat/sinew still goes to the ground, though, which might be good or bad depending on your needs.