Add support for 1.21.4+

[alexsvorada]

Short Description

Add support for 1.21.4+

Additions/Changes/Removals

Add support for 1.21.4+ & new Slimefun
Replaced GlowEnchant with meta glint override

Checklist

• I have fully tested the proposed changes and promise that they will not break everything into chaos.
• I have also tested the proposed changes in combination with base Slimefun and made sure nothing breaks/unexpected happens.
• I followed the existing code standards and didn't mess up the formatting.
• I did my best to add documentation to any public classes or methods I added which may not be obvious to maintainers.
• I have added Nonnull and Nullable annotations to my methods to indicate their behaviour for null values

[Boomer-1]

litexpansion was officially abandoned after 1.20.2. as of right now you'd have to fork it and update it yourself, or have someone else do it.

[alexsvorada]

Well yes, this is a fork that supports the new version