feat(content): Add salvage action for metal items

[RoyalFox2140]

Purpose of change

Allows the hacksaw and toolboxes to salvage a select number of metals by weight so we can avoid a thousand uncrafts (not exaggerating here) and so we can turn useless items into useful scrap.

Describe the solution

In the docs it was known we have a way to do custom salvage actions, so I created one you will see on the hacksaw. I also was required to add "salvaged_into" items for each appropriate metal and went with chunks of steel for iron items. We only allow steel and don't differentiate so I added steel to iron because some steel items are made of iron for some reason. I also was required to add "flags": [ "NO_SALVAGE" ] to each relevant base material because in testing you could saw down chunks of steel into chunks of steel. I added a lot of extra no salvages in case we expand this salvage PR in the future.

Note: I selected just a few appropriate metals but not all possible metals. If we want to we can add it for everything.

Describe alternatives you've considered

An uncraft for every. Single. Item. >:(

Testing

JSON loaded into game, tested. NOTE The screenshot is not fully indicative as I changed time to 10 seconds.

Additional context

HAHAHAHAHAHAHAHAHAHA

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[chaosvolt]

These and related salvaging into chunks of steel instead of scrap is prolly why some of the behavior you observed during was a touch janky.

[RoyalFox2140]

I think scrap metal is too small, you'd be sawing all day to get your item that small. The hacksaw is 20 scrap metal or 4 chunks of steel, so we're increasing the sawing required by a factor of 5.

[chaosvolt]

Hmm. Might be worth testing if making it saw into scrap metal fixes the weird issue of it salvaging super-fast however. If it doesn't then keeping them as steel chunks may be best, who knows.

[RoyalFox2140]

No. All salvage action times are bugged, including cotton. Salvaging doesn't consume time? Tested with swiss knife in the dark on the down filled blanket.
https://cdn.discordapp.com/attachments/830916451517857894/1205444025314713601/image.png?ex=65d8643b&is=65c5ef3b&hm=d75cd22bee79309a32451325eff87d75abc4dc3c31fa0fd394ca706497501880&
https://cdn.discordapp.com/attachments/830916451517857894/1205444057279635496/image.png?ex=65d86443&is=65c5ef43&hm=3193dffd85f72e7e01cbaefe934153d4396bee24eb0e9d9ebe19511d4fd427f7&

[RoyalFox2140]

#4208 Confirmed all salvage actions are bugged and do not use correct time.

[chaosvolt]

So, far as I can tell this all looks good at a glance aside from the issue that currently has me a touch stumped as to the cause, the toolbox having moves_per_part massively inflated is basically a hack in my opinion and it seems not even nessecary since salvaging for a lot of items is still instant.

I think what'd be good, probably as a followup PR I'll probably have to work on, would be to figure out how to fix salvaging moves_per_part to actually work right, and then make it so that the item density of the material being salvaged modifies this time. That way the same JSON value will let you zip through cloth and the like while taking longer to process metals.

[scarf005]

let's worry about salvage actions in following PRs.