Scorched Guns 2 0.5.5 Unofficial port

Fixes

• Items in the gun bench are no longer lost when you reload a save. The bench was writing every slot empty, so its contents disappeared on the next load — most visibly a blueprint, which is why it looked like crafting had eaten it. The supply scamp's inventory had the same bug.
• Several tag names did not match 1.21.1. A tag that nobody defines is silently empty rather than an error, so the recipes and items using them quietly stopped working. The names now match NeoForge's.