Update to 1.21

[TheDeathlyCow]

Direct port of Frostiful to 1.21. I think its getting mostly stable now but gonna keep testing and fixing stuff for a bit more.

TODO

• [x] test warm foods
• [x] use fabric tooltip event for warm foods instead of mixin
• [x] implement to thermoo armor materials API
• [x] rename the frost tipped arrow to glacial arrow (maybe separate pr for this actually)
• [x] make 1.20.4 archive branch
• [x] make a dev branch to merge this into instead of main
• [x] fix frost wand not being enchanted in the enchanting table for some reason
• [x] update tags with new conventional tags and new mc tags
• [x] fix the flakey testmod
• [x] decrease time for packed snow to decay a lot
• [x] Frostologer suggestion: Don't just replace with air unknown modded light sources, but destroy them, making them drop