32-bit support

[ThatMG393]

Is your feature request related to a problem? Please describe.
Mod is very broken on 32-bit. (normally just crashes)

Describe the solution you'd like
Respect pointer sizes and shifts on different machine architectures by using org.lwjgl.system.Pointer or similar methods.

Describe alternatives you've considered
None.

Additional context
I have made Iris work on 32-bit but the game crashes when it tries to render a text_display (either a nametag, player name, etc.)