Restructure loading of game

Zennysoft.Game.Ma.Implementation/App/State/States/AppLogic.State.MainMenu.cs

@@ -0,0 +1,20 @@
+using Chickensoft.Introspection;
+
+namespace Zennysoft.Ma.Adapter;
+
+public partial class AppLogic
+{
+  public partial record State
+  {
+    [Meta]
+    public partial record MainMenu : State, IGet<Input.NewGame>, IGet<Input.EnemyViewerOpened>
+    {
+      public MainMenu()
+      {
+      }
+
+      public Transition On(in Input.NewGame input) => To<GameStarted>();
+      public Transition On(in Input.EnemyViewerOpened input) => To<EnemyViewer>();
+    }
+  }
+}