Fix equipmentslot enum ordering + add saddle equipmentslot

[spring-dependency-management]

Fixes #1124
Fixes #1111

[booky10]

This is not a proper fix and doesn't account for changes in versions and also doesn't account for different usecases of the EquipmentSlot enum in the minecraft protocol
This issue is more complicated to fix than just reordering enum constants

Minecraft has multiple ways of serializing equipment slots to network:

• the equipment packet uses the enum ordinal
• the equippable item component uses the "id" (exists since 1.21.2, named "filter flag" in versions before 1.21.2)

yes, this is pretty stupid, but thats just how mojang decided to do things
if you want to figure out a solution for this, go ahead

decompiled source of 1.21.2 EquipmentSlot: https://haste.pinofett.de/rk8whjwvz4.java
decompiled source of 1.21 EquipmentSlot: https://haste.pinofett.de/4tndktzx3w.java