refactor!: renamed GameManager to Universe and HierarchyObject to UniverseObject

Engine.Core/Exceptions/HierarchyObjectNotFoundException.cs

@@ -1,9 +0,0 @@
-using System;
-
-namespace Syntriax.Engine.Core.Exceptions;
-
-public class HierarchyObjectNotFoundException(string? message) : Exception(message)
-{
-    public static NotAssignedException FromType<THierarchyObject>()
-        => new($"{typeof(THierarchyObject).FullName} was not found");
-}

Engine.Core/Exceptions/UniverseObjectNotFoundException.cs

@@ -0,0 +1,9 @@
+using System;
+
+namespace Syntriax.Engine.Core.Exceptions;
+
+public class UniverseObjectNotFoundException(string? message) : Exception(message)
+{
+    public static NotAssignedException FromType<TUniverseObject>()
+        => new($"{typeof(TUniverseObject).FullName} was not found");
+}