Add joker support during voting

Domain/Player.cs

@@ -22,6 +22,7 @@ public class Player
     public bool IsAdmin { get; set; }
     public Phase CurrentPhase { get; set; } = Phase.Suggest;
     public bool VotesFinal { get; set; }
+    public bool HasJoker { get; set; }
 
     public DateTimeOffset CreatedAt { get; set; } = DateTimeOffset.UtcNow;