More accurate String Types

[GniLudio]

It would be nice if parameters and return values of type string would have more accurate types.

Examples:
     AbilityName (FindAbilityByName, GetAbilityName)
     ModifierName (RemoveAllModifiersOfName, GetIntrinsicModifierName)
     ItemName (AddItemByName, FindItemInInventory, HasItemInInventory)
     EffectName (GetEffectName, GetStatusEffectName)