feat: add new 1.21.2+ folders and bump pack formats

[misode]

Adds these two folders to the resource pack

[RitikShah]

Running poetry lock should fix the executing 2.0.0 being yanked.
There also might be an update we need to make for updating the pack format numbers? Might be good to document the update process in a markdown file, we can work on that after summit.

[edayot]

that odd, my PR did manage to get all dependencies and not this one
#450

[RitikShah]

Can we get @edayot's branch into this one so there's one 1.21.2 branch that we can merge?

[RitikShah]

TODO

• Merge 1 21 2 update #450 into this (pack formats)
• items
• equipments (moved from models/equipment)
• Figure out custom_model_data merging..
  • Make it "work fine", handle special logic directly in weld

[misode]

@RitikShah This PR is ready now. Item model merging will have to be done in a later PR.

[RitikShah]

Changes look good, will address beet.contrib.model_merging in a future PR.