Unify items and weapons

Some items can be used as melee and ranged weapons. Like “zauberkugel“ / “efferdbart“…

My suggestion would be, we don’t declare weapons as wepons, but make alle items basically equipments and add values for a combat technique. and show all of those infos for this item. in the item list.

We would definitely need to restructure lots of files for this and probably need a conversion mechanism for old characters… But it should be worth to put effort in this.