Add item spawn menu

Fix game over bug
Start adding more implementation for jewels

Zennysoft.Game.Ma.Implementation/Components/IExperiencePointsComponent.cs

@@ -12,6 +12,8 @@ public interface IExperiencePointsComponent : IEntityComponent
 
   public IAutoProp<int> Level { get; }
 
+  public void ModifyExpGainRate(double newRate);
+
   public void Gain(int baseExpGain);
 
   public void LevelUp();