refactor: move global classes def into package

src/PoloniumRegistry.cs

@@ -2,15 +2,14 @@ using Godot;
 using Polonium.Agents;
 using Polonium.Interfaces;
 using Polonium.Resources;
-using Polonium.Scenes;
 
 namespace Polonium;
 
 public class PoloniumRegistry
 {
+    public static IGlobalRegistry GlobalRegistry { get; set; }
     private static PoloniumRegistry InternalInstance { get; set; }
     public static PoloniumRegistry Instance => InternalInstance ??= new PoloniumRegistry();
-    public RootScene RootScene { get; set; }
     public Config Config { get; set; }
     public Save Save { get; set; }
 
@@ -21,6 +20,6 @@ public class PoloniumRegistry
     public Dictionary<string, Agent> Agents { get; set; } = new();
     
     public HashSet<ITimeConsumer> TimeConsumers { get; set; } = new();
-    public bool Paused { get; set; }
+    
 
 }