Add buffs/debuffs/conditions to character sheets

[BodrickLight]

character: {
  conditions: [{
      duration?: number
      title: string
      colour: string
      effects: [{
          type: enum // e.g. AttributeModifier, DamageOnTurn? 
          property: string // e.g. dexterity, ac
          modifier: string // e.g. 25, +3, -2
        }, {
          type: enum
          diceCount: number
          diceSize: number
          bonus: number
          damageType: string
        }
      ]
    }
  ]
}