[Script System][Suggestions] AddPrimarySkill(hero, skill, quantity, duration) and more

AddPrimarySkill(hero, skill, quantity, duration)
hero: the hero to which you want to add the quantity of the Primary Skill (see, for example, GetHero).
skill: the ID of the Primary Skill you want to add (see section "Skills").
quantity: the quantity of the Primary Skill you want to add to the hero.
duration: the duration during which the added quantity of the Primary Skill will be active. After this time the added quantity of the Primary Skill will be removed. Can be set from "0" and beyond.
- "0" for "permanent", the added quantity of the Primary Skill will never be removed.
- "1" and beyond (counts as "day"), the added quantity of the Primary Skill will be removed at the end of the number of the specified days (turns).

Adds the specified quantity of the Primary Skill to the specified hero for the specified duration.

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RemovePrimarySkill(hero, skill, quantity, duration)
hero: the hero to which you want to remove the quantity of the Primary Skill (see, for example, GetHero).
skill: the ID of the Primary Skill you want to remove (see section "Skills").
quantity: the quantity of the Primary Skill you want to remove from the hero.
duration: the duration during which the change to quantity of the Primary Skill will be applied. After this time the change to the quantity of the Primary Skill will be canceled. Can be set from "0" and beyond.
- "0" for "permanent", the change to the quantity of the Primary Skill will never be canceled.
- "1" and beyond (counts as "day"), the change to the quantity of the Primary Skill will be canceled at the end of the number of the specified days (turns).

Removes the specified quantity of the Primary Skill to the specified hero for the specified duration.