fix(core): Adds Hashed & Hierarchical Timer Wheel (#655)

- Removes TimerPriority
- Removes TimerThread
- Adds a [Hashed & Hierarchical Timer Wheel](http://www.cs.columbia.edu/~nahum/w6998/papers/ton97-timing-wheels.pdf)

Projects/UOContent/Items/Containers/BaseTreasureChest.cs

@@ -203,7 +203,6 @@ namespace Server.Items
             )
             {
                 m_Chest = chest;
-                Priority = TimerPriority.OneMinute;
             }
 
             protected override void OnTick()

Projects/UOContent/Items/Containers/FurnitureContainer.cs

@@ -369,7 +369,6 @@ namespace Server.Items
 
         public FurnitureTimer(Container c, Mobile m) : base(TimeSpan.FromSeconds(0.5), TimeSpan.FromSeconds(0.5))
         {
-            Priority = TimerPriority.TwoFiftyMS;
 
             m_Container = c;
             m_Mobile = m;

Projects/UOContent/Items/Containers/TreasureMapChest.cs

@@ -588,7 +588,6 @@ namespace Server.Items
             public DeleteTimer(Item item, DateTime time) : base(time - Core.Now)
             {
                 m_Item = item;
-                Priority = TimerPriority.OneMinute;
             }
 
             protected override void OnTick()