[Tacz] Slings

 Adds a sling system for use with tacz using curios api

to use simply:
put the gun into the sling item
put the sling in your curios slot
press X(default keybind) to either draw the gun from or put the gun back in your sling

features:
teired slings with different draw and putaway delays
gun swapping

full survival compat

config file(stored in serverconfig folder in world folder)

credits: maxinablender(assets), tkg112(programing)