Fix copper scrap:copper ratios for crafting recipes (#37817)

[jkraybill]

Summary

SUMMARY: Bugfixes "Fix copper scrap:copper ratios for crafting recipes"

Purpose of change

Fixes #37817.

Describe the solution

I audited all the recipes that use copper scrap, or copper in quantities above 25. I found that the bug report was correct -- while the copper tubing recipe was correctly using 7 scrap or 175 copper, 9 other recipes either used a ratio of 1 scrap:100 copper (overpowered for scrap), or did not accept scrap when it seemed like they should.

I added a new material, "copper_scrap_equivalent", which is either 1 copper scrap or 25 copper, and fixed the recipes in the following ways:

Copper Bracelet: was 60 copper, now is 2 scrap equivalent (now accepts scrap, slight reduction in mass used, still uses more than the output mass)
Wooden Canteen: was 20 copper, now 1 scrap equivalent (now accepts scrap, slight increase in mass used)
Makeshift Copper Pot: was 4/400, now 16 SE (fixed scrap ratio)
Copper Axe: was 10/1000, now 40 SE (fixed scrap ratio)
Copper Pot: was 5/500, now 20 SE (fixed scrap ratio)
Copper Tubing: was 7/175, now 7 SE (no functional change)
Neoprene Sheet: was 50 copper, now 2 scrap equivalent (now accepts scrap)
Bronze: was 50 copper, now 2 scrap equivalent (now accepts scrap)
Copper Knife: was 2/200, now 8 SE (fixed scrap ratio)
Copper Spear: was 3/300, now 12 SE (fixed scrap ratio)

Describe alternatives you've considered

I considered revising copper requirements down, but after doing the math on the input:output weight ratios, it seemed apparent that the scrap quantities were too low, not the copper too high. See attached spreadsheet for calculations: 37817.xlsx

I also considered not adding scrap to the recipes that didn't already need it, but given that you could already make things like a copper pot out of scrap, I saw no reason you shouldn't be able to in other recipes. Bronze was the only one that maybe there's an argument for?

Testing

Spawned a bunch of bronze and bronze scrap before and after the update, repro'd the issue, checked out the copper recipes, and verified the above numbers afterwards.