Allow Attack element to be marked as versatile

[Former user]

On a Weapon the attributes allow you to mark the item as versatile. Adding both damage and versatile damage allows you to switch between the damage types when using the attack.

Adding the Attack element to an effect on a non-weapon, adding both damage and versatile damage. Displays as an available attack but can not be switched between the types of attack.

[Kim Mantas]

Only weapons can have the versatile property so only weapons can have their mode switched. There is no rule support for non-weapons having a versatile property so it will not be supported in the sheet.