Creates a custom wearable, either by model path or by item index.
Since these cosmetics aren't deleted by default, a function is used to delete them on player respawn and touching the resupply cabinet.
This file provides two examples:
How to create the Meet the Pyro grenade bottles based on...
Prove you're the hottest thing around town with this highly fashionable shirt.
Model - Strno8 - https://steamcommunity.com/id/patrezak
Textures, Concept - Pie_savvy - https://steamcommunity.com/id/Pie_Savvy/
SFM art - Hotrod
McCoolGuy - https://steamcommunity.com/id/HotrodMcCoolgal