Add syndie satchel, buff syndie backpack, abstract bag parents

[Plykiya]

About the PR

• Adds the syndicate satchel to the game since syndies already had backpacks and duffels (sprite by Dutch-VanDerLinde). It is explosion-resistant and one row larger than a regular satchel.
• Buffs the syndicate backpack storage by one column to give it an additional benefit like the duffelbag.
• Adds a missing description to the syndicate backpack.
• Created base abstract parents for the backpack, satchel, and duffelbag and change all relevant bags to use these abstract parents instead of being parented off of the default backpack.

Satchels from #27398

Why / Balance

Syndie satchels are necessary for my drip game and it's odd we don't have them yet.

Technical details

Abstract parents are needed for the different bag types because it's just good practice to not parent off of used entities, someone might make a change to backpacks thinking it only affects backpacks and it cascades to all 3 bag types in the game.

I thought about changing the Id of all the bags to reflect the new parent base since every id currently has "Backpack" in the name but decided it would be way too disruptive of a change for no reason.

Parenting changes:

• ClothingBackpack -> ClothingBagBackpackBase
• ClothingBackpackDuffel -> ClothingBagDuffelBase
• ClothingBackpackSatchel -> ClothingBagSatchelBase

Media

2024-10-09.01-40-36.mp4

Requirements

• I have read and am following the Pull Request and Changelog Guidelines.
• I have added media to this PR or it does not require an ingame showcase.

Breaking changes

Changelog

🆑

• add: The syndicate satchel is now available for purchase in the uplink.

[github-actions]

RSI Diff Bot; head commit 9e36c86 merging into 357e998
This PR makes changes to 1 or more RSIs. Here is a summary of all changes:

Resources/Textures/Clothing/Back/Satchels/syndicate.rsi

State	Old	New	Status
equipped-BACKPACK			Added
icon			Added
inhand-left			Added
inhand-right			Added

Edit: diff updated after 9e36c86

[bruhmogus]

YES. YES. YES. SYNDRIP IS A NECESSARY FEATURE

[Centronias]

Not like I'm not guilty of doing this all the time, but mixing the abstract bag parents changes with syndicate bag changes makes this a bit slower to review.