Change classNames from enum to type

[lucasgmagalhaes]

Change from this:

export const enum HeroClass {
  MAGE = "Mage",
  WARRIOR = "Warrior",
  HUNTER = "Hunter",
  THIEF = "Thief"
}

to this:

export type HeroClass =
"Mage" |
"Warrior" |
"Hunter" |
"Thief" |