Support more enemies for custom stab animation

Move axe sheath sockets to the back.

Should fix exessive additions of finite items to the inventory.

Complete animation overhaul. Dedicated animation for all secondaries where the weapon is in the hands.
Created hundrets of new animations for this.

Hopefully fixes the issues with missing primary variants.

---

LW2 Classes support
I added limited support for LW2 classes, allowing them to equip primary secondaries. I havent tested this at all and their abiltities are not designed to work with primary secondaries so there will probably be glitches and bugs.

Patch that hopefully fixes a bug where primary variants are missing / not added to the inventory.

Prevent duplicate primary variants of unique items (e.g. Shadowkeeper)