Add the F1 ECS inspector overlay to the world scene

Bump the engine submodule to 09dbdfa (MrGameEng.Inspector) and wire the
new DevTools-style ECS debugger into WorldScene via UseInspector(renderer),
before UseDevConsole so the console still draws on top. The HUD controls
hint now mentions F1.

Co-Authored-By: Claude Opus 4.8 <noreply@anthropic.com>

src/LittleSim/Scenes/WorldScene.cs

@@ -12,6 +12,7 @@ using MrGameEng.Core;
 using MrGameEng.DevConsole;
 using MrGameEng.Graphics;
 using MrGameEng.Input;
+using MrGameEng.Inspector;
 using MrGameEng.Tilemaps;
 using MrGameEng.UI;
 using Myra.Graphics2D;
@@ -92,6 +93,7 @@ public sealed class WorldScene : Scene
         );
         desktop.Root = Ui.Screen(hudLabel, speedBar, _pause.Root);
 
+        this.UseInspector(renderer);
         var console = this.UseDevConsole();
         RegisterCommands(console, content, atlases);