Downscale textures and compress sounds

[Ally-for-Hire]

Description

This is pretty simple, we can downscale and compress a lot of the textures and sounds to decrease the size of the mod with help from AI. We have a lot of textures and sounds that are high quality for no reason and can be safely lowered with no loss. This is utilizing standard downscaling and compression techniques, it is not generating any art or sounds. This saves ~300mb of mod size, which is pretty fantastic.

Notes

• Since this changes textures and sounds, I'm not sure how the interaction will be between old client/server versions and new ones. I expect everything will be fine.
• This is mostly to store progress on the act of optimizing the addon's size, the current plan is to merge the refactor in first. But we can just take assets from this after.

[Ally-for-Hire]

very much in favor of testing and merging this asap