Adds 5 new backpacks

[Hymore246]

Summary

SUMMARY: Content "Adds 5 new backpacks"

Purpose of change

Fixes #32332
Adds 5 new backpacks of various sizes to the game.

Describe the solution

This change adds 5 new backpacks and recipes, Below are the details for the new backpacks:

Name	Encumbrance	Storage (L)	Special
high-volume rucksack	60	100.00
hiking pack	35	55.00	Activate to sheath up to 2 small knifes/swords
large tactical backpack	45	65.00
petpack	14	3.75	Activated to store a small creature (cat, chicken, etc) inside just like a pet carrier
travelpack	14	25.00

Describe alternatives you've considered

I think the encumbrance and storage are balanced but I'm open to other opinions. As far as I know, encumbrance as a whole needs an overhaul but I'll adjust the items as necessary.

Additional context

I did not come up with the idea for these backpacks. The user "ghost" created these backpack in #32426. However, ghost has delete their account and closed the PR for some unknown reason. I did not want to see a good idea go to waste, so I'm adding them in myself.

[ghost]

As I know @anothersimulacrum will request once he sees this, can you change the formatting of their volumes to the milliliter/liter format?

[ampersand55]

I think the current backpacks need to be rebalanced in relation to these.

E.g. the travelpack has the same storage as the survivor rucksack (25L), but is much better.

The survivor rucksack is higher encumbrance, lower armor, higher coverage, higher skill requirements requires more materials to craft, not waterproof, heavier and takes up more space.

The normal backpack, the military rucksack and the duffelbag seem to be able to store encumbrance x 4 units of 250ml.

The survivor backpack and the survivor rucksack seem to be able to store encumbrance x 5 + 10 units of 250ml, and the survivor duffelbag is a little better.

A table:

Item	Current encumbrance	Normal encumbrance	High-end "survivor" encumbrance	Storage
high-volume rucksack	60	100	78	100L
hiking pack	35	55	42	55L
large tactical backpack	45	65	50	65L
travelpack	14	25	18	25L
backpack	10	10	6	10L
military rucksack	20	20	14	20L
duffel bag	30	30	22	30L
survivor backpack	8	12.5	8	12.5L
survivor rucksack	18	25	18	25L
survivor duffelbag	25	37.5	(28)	37.5L

[anothersimulacrum]

Oh, whoops, missed that comment from LaVeyan. Jenkins seems to just be having problems today.

[Hymore246]

I think the current backpacks need to be rebalanced in relation to these.

I agree and there should probably be a few more containers added too. But that's outside the scope of this PR.

[ampersand55]

I think the current backpacks need to be rebalanced in relation to these.

I agree and there should probably be a few more containers added too. But that's outside the scope of this PR.

Adjusting the encumbrance to be the same as the storage in L would be enough to make them consistent with the current backpacks and imho mergable.

[Hymore246]

I think the current backpacks need to be rebalanced in relation to these.

I agree and there should probably be a few more containers added too. But that's outside the scope of this PR.

Adjusting the encumbrance to be the same as the storage in L would be enough to make them consistent with the current backpacks and imho mergable.

Yeah, that seems fair. Most containers seem to follow that trend. There should probably be another PR in the future to rethink the standard formula.

[ghost]

Suggested change

	"min_volume": 1,
	"min_volume": "250ml",

I'm honestly not sure if min_volume and max_volume accept the milliliter/liter format.

[l29ah]

Re encumbrance: #32332 (comment)