hierachy and parent child system updates

- started working on an editor hierarchy window
- testing filters
- testing parent child relations without system
- testing root component
- thinking about how to get all entities that are not a child, but also don't have an other identifying component

Nerfed.Editor/Editor/EditorGui.cs

@@ -66,6 +66,11 @@ namespace Nerfed.Editor
             UpdateDock();
 
             ImGui.ShowDemoWindow();
+
+            foreach (MoonTools.ECS.System system in Program.editorSystems)
+            {
+                system.Update(Engine.Timestep);
+            }
         }
     }
 }