refactor: Actions to Delegates

Engine.Core/Abstract/Assignable/IAssignableGameObject.cs

@@ -1,5 +1,3 @@
-using System;
-
 namespace Syntriax.Engine.Core.Abstract;
 
 /// <summary>
@@ -10,7 +8,7 @@ public interface IAssignableGameObject : IAssignable
     /// <summary>
     /// Event triggered when the <see cref="IGameObject"/> value has has been assigned a new value.
     /// </summary>
-    Action<IAssignableGameObject>? OnGameObjectAssigned { get; set; }
+    event OnGameObjectAssignedDelegate? OnGameObjectAssigned;
 
     /// <inheritdoc cref="IGameObject" />
     IGameObject GameObject { get; }
@@ -23,4 +21,6 @@ public interface IAssignableGameObject : IAssignable
     /// <see cref="true"/>, if the value given assigned successfully assigned, <see cref="false"/> if not.
     /// </returns>
     bool Assign(IGameObject gameObject);
+
+    delegate void OnGameObjectAssignedDelegate(IAssignableGameObject sender);
 }