feat: Added IAssignable.Unassign()

Engine.Core/Behaviour.cs

@@ -6,6 +6,7 @@ namespace Syntriax.Engine.Core;
 
 public abstract class Behaviour : IBehaviour
 {
+    public Action<IAssignable>? OnUnassigned { get; set; } = null;
     public Action<IAssignableStateEnable>? OnStateEnableAssigned { get; set; } = null;
     public Action<IAssignableBehaviourController>? OnBehaviourControllerAssigned { get; set; } = null;
 
@@ -73,6 +74,19 @@ public abstract class Behaviour : IBehaviour
         return true;
     }
 
+    public bool Unassign()
+    {
+        if (Initialized)
+            return false;
+
+        _stateEnable = null!;
+        _behaviourController = null!;
+        _stateEnable.Unassign();
+
+        OnUnassigned?.Invoke(this);
+        return true;
+    }
+
     public bool Initialize()
     {
         if (Initialized)