Boneforge

[pjf]

Ironbone and bloodsteel production should have their own dedicated building. The name "bonesmelter" or boneforge has been proposed.

This thread is relevant.

Related to #98

• [x] Make building design
• [x] Move extract blood to bonesmelter
• [x] Move ironbone and bloodsteel reactions to bonesmelter
• [x] Allow bonesmelter to create ash

[pjf]

Done!