Add Seer handling

[timadye]

• Seer selects a player and fate informs them if that player is a werewolf or not.
  • Dark villager does not count as a werewolf.
• An aura switch is used for an unreliable seer.
  • One player is randomly designated as aura switched. Fate gives the opposite answer when queried about that player.
  • If the seer happens to be aura switched, then the wrong answer is returned for all players.