Move GameLogic to new project

Zennysoft.Game.Ma.Implementation/Game/state/states/GameLogic.State.MenuBackdrop.cs

@@ -0,0 +1,33 @@
+namespace Zennysoft.Game.Ma.Implementation;
+
+using Chickensoft.Introspection;
+using Zennysoft.Game.Abstractions;
+
+public partial class GameLogic
+{
+  public partial record State
+  {
+    [Meta]
+    public partial record MenuBackdrop : State, IGet<Input.StartGame>, IGet<Input.Initialize>
+    {
+      public MenuBackdrop()
+      {
+        OnAttach(() => Get<IAppRepo>().GameEntered += OnGameEntered);
+        OnDetach(() => Get<IAppRepo>().GameEntered -= OnGameEntered);
+      }
+
+      public void OnGameEntered() => Input(new Input.StartGame());
+
+      public Transition On(in Input.StartGame input)
+      {
+        Output(new Output.LoadMap());
+        return To<Playing>();
+      }
+
+      public Transition On(in Input.Initialize input)
+      {
+        return ToSelf();
+      }
+    }
+  }
+}