allow worn welding goggles to be used in veh_interact.cpp
Merge pull request #5230 from BevapDin/fix-usage-of-goggles

allow worn welding goggles to be used in veh_interact.cpp
Recategorization of waterskin and stone knife

Moves waterskin to Other -> Containers and stone knife to Other -> Tools.
Merge pull request #5234 from MisterFelixFox/tiny-recategorize

Recategorization of waterskin and stone knife
Moved holographic sights to 'sights' slot
Merge pull request #5243 from Voker57/holosights

Moved holographic sights to 'sights' slot