Re-introduce prototype code

src/game/GameLogic.Input.cs

@@ -0,0 +1,20 @@
+namespace GameJamDungeon
+{
+  public partial class GameLogic
+  {
+    public static class Input
+    {
+      public readonly record struct Start;
+
+      public readonly record struct Initialize;
+
+      public readonly record struct InventoryMenuButtonPressed;
+
+      public readonly record struct MiniMapButtonPressed;
+
+      public readonly record struct MiniMapButtonReleased;
+
+      public readonly record struct GameOver;
+    }
+  }
+}