Modernize clothing stores

[ymber]

Summary

SUMMARY: Content "Overhaul clothing stores"

Purpose of change

Clothing stores feel like they're from 0.A. and they don't use modern mapgen.

Describe the solution

Update clothing stores to use palettes and SUS itemgroups. Add new multi z level clothing store maps.

Depends on #35932.

Testing

Game loads without errors and s_clothes is generated as expected.

[ghost]

May I ask if you can give us a demonstration of what they will look like now? Or what you have planned for the extra story/floor?

[ymber]

This should be ready now. I've reduced the scope because it was getting big and full of tangential changes. As it stands every s_clothes* map is updated except s_clothes_3 and s_clothes_5. No new maps have been added and the updates to existing ones are mostly confined to items.

[I-am-Erk]

Just a few minor things. Excited to see this merge soon.

[I-am-Erk]

Some small changes for finesse but overall it could be merged as is.

[I-am-Erk]

Maybe we should make it one or the other? Not required but it would help a bit with balance

Suggested change

	{ "item": "tailor_japanese", "prob": 10 },
	{
	"distribution": [
	{ "item": "tailor_portfolio", "prob": 70 },
	{ "item": "tailor_japanese", "prob": 30 }
	], "prob": 25
	},

This gives roughly the same chance of either appearing, but doesn't allow both to appear.

[ymber]

I think it's reasonable to allow both to appear. A well stocked tailors library is fairly likely to have stuff from around the world.