Add item spawn menu

Fix game over bug
Start adding more implementation for jewels

Zennysoft.Game.Ma.Implementation/Game/GameRepo.cs

@@ -110,14 +110,14 @@ public class GameRepo : IGameRepo
   {
     AnnounceMessageInInventory("Experience points temporarily doubled.");
     DoubleExpTimeStart?.Invoke(lengthOfEffect.Seconds);
-    ExpRate = 2;
+    ExpRate *= 2;
   }
 
   public void EndDoubleExp()
   {
     AnnounceMessageOnMainScreen("Experience points effect wore off.");
     DoubleExpTimeEnd?.Invoke();
-    ExpRate = 1;
+    ExpRate /= 2;
   }
 
   public void AnnounceMessageOnMainScreen(string message)

Zennysoft.Game.Ma.Implementation/Game/state/gamestates/GameState.State.GameOver.cs

@@ -8,13 +8,20 @@ public partial class GameState
   public partial record State
   {
     [Meta, LogicBlock(typeof(State), Diagram = true)]
-    public partial record GameOver : State, IGet<Input.NewGame>
+    public partial record GameOver : InGame, IGet<Input.NewGame>, IGet<Input.ExitGame>
     {
       public Transition On(in Input.NewGame input)
       {
         Output(new Output.InitializeGame());
         return To<InGame>();
       }
+
+      public Transition On(in Input.ExitGame input)
+      {
+        Output(new Output.ClosePauseScreen());
+        Output(new Output.ExitGame());
+        return To<State>();
+      }
     }
   }
 }