WIP port to 1.21.11

[CodeF53]

Remaining problems:

instances of renderItem where they changed the method's arguments so much (and removed all usages of the method in the minecraft codbase so I have nothing to base new code off of) are broken:

• org/jlortiz/playercollars/client/CollarRenderer.java
• org/jlortiz/playercollars/client/FootPawRenderer.java
• org/jlortiz/playercollars/client/PawRenderer.java

org/jlortiz/playercollars/client/screen/TagLikeListWidget.java has inner classes TransparentButton and TagEntry that I have no clue how they work or how to fix

src/main/java/org/jlortiz/playercollars/client/CollarRenderer.java used getArmorItems which seemingly has no equivalent anymore.

org/jlortiz/playercollars/datagen/DatagenEntrypoint.java used getOrCreateTagBuilder which I havent bothered looking for migration guides for yet

org/jlortiz/playercollars/datagen/ModelDataGenerator.java used a lot of interesting looking stuff that I don't understand and cant figure out how to migrate in generateBlockStateModels

These are stopping me from getting a build running and testing out the mod

[sorgyfrog]

let me push me 1.21.8 branch so you can base it off of that, i think i've worked around most if not all of the problems you're seeing here (assuming that .11 didn't break them again)