Add **Behavior Tree** asset type and editing

Source/Engine/AI/BehaviorKnowledge.h

@@ -0,0 +1,18 @@
+// Copyright (c) 2012-2023 Wojciech Figat. All rights reserved.
+
+#pragma once
+
+#include "Engine/Scripting/ScriptingObject.h"
+
+/// <summary>
+/// Behavior logic component knowledge data container. Contains blackboard values, sensors data and goals storage for Behavior Tree execution.
+/// </summary>
+API_CLASS() class FLAXENGINE_API BehaviorKnowledge : public ScriptingObject
+{
+    DECLARE_SCRIPTING_TYPE_WITH_CONSTRUCTOR_IMPL(BehaviorKnowledge, ScriptingObject);
+
+    // TODO: blackboard
+    // TODO: sensors data
+    // TODO: goals
+    // TODO: GetGoal/HasGoal
+};