Adds blacksmithy

[MistakeNot4892]

Description of changes

This is a partial implementation of blacksmithy and metalworking to bracket the existing low-tech crafting systems like casting.

Longer-term TODO (not in this PR)

• Update bladed weapons to be crafted like tools, by combining handle and blade blank.
• Implement quenching/hardening and grinding/polishing as final steps after producing the blanks.
• Implement barrel, chest and armour fittings.
• Implement barrel crafting.
• Implement nails/uses for nails.
• Move metal crafting recipes off stacks and onto either the autolathe, forging or both.
• Add anvil forging (ingots on an anvil instead of a billet?)
• Punch up the forging strings and messages to be less brusque.
• Find icons for armor, helmet, blade blanks.

Why and what will this PR improve

• Implements a metalworking minigame to replace using psychic powers and spaceman bare hands to turn ingots into things.
• Clang clang clang clang.

Authorship

Code is mine, icons and a lot of the design work belong to @PlayerDeer.

Changelog

🆑
feature: Added blacksmithing!
/:cl:

premature review

[MistakeNot4892]

Breaking this up a bit for ease of workflow/review:
#4709, #4710, #4711, #4712, #4713

[MistakeNot4892]

I am flagging on this one a bit. It's basically ready to go other than some balancing around how long billets retain heat, and getting a better sound effect for the forging. Plus icons for the various blanks.

[MistakeNot4892]

Happy with where this is sitting now, other stuff can be a follow up.

[MistakeNot4892]

Depends on #4802

[out-of-phaze]

note to self add smithing stuff to karzerfeste