Make key items (flower and key staff)

Implement fog door for unlockable doors

Zennysoft.Game.Ma.Implementation/Player/IPlayer.cs

@@ -78,6 +78,8 @@ public interface IPlayer : IKillable, ICharacterBody3D
 
   public bool BriefImmunity { get; set; }
 
+  public bool CanOpenDoors { get; set; }
+
   public event Action PlayerDied;
   public delegate IBaseInventoryItem RerollItem(IBaseInventoryItem item);
 }