Refactor and consolidate wield

[marilynias]

Summary

Infrastructure "Refactor wield"

Purpose of change

wield() would clear the old item if it was in you inventory, but not if it came from the world.
Additionally there are a couple different wield() functions:

Cataclysm-DDA/src/game.cpp

Line 10423 in 27152a9

void game::wield( item_location loc )

Cataclysm-DDA/src/game.cpp

Line 10527 in 27152a9

void game::wield()

Cataclysm-DDA/src/avatar.cpp

Line 1377 in 27152a9

bool avatar::wield( item &target, const int obtain_cost )

Cataclysm-DDA/src/npc.cpp

Line 1516 in 27152a9

bool npc::wield( item &it )

I want to unify them.
some context: discord and #79716

Describe the solution

create npc::wield( item_location loc ) that takes the location, so I can remove the old location and wield_new( item it ) since sometimes you want to wield a newly created item without a location.

There are some subtle differences between the current wield function, which have to be implemented .
use item_location where available, for newly created items make wield_new method

Describe alternatives you've considered

Testing

compiles
all [w]ield functions work
trading npc resulting in wield works
wielding from reloading works
dropping into vehicle from [w]ield works without old game::wield logic
Some wield-times seem to complain.

Additional context

Things WILL break.

[marilynias]

should be ready for first looks