Add native scrolling to new editor tree views

new_editor/include/XCEditor/Collections/UIEditorTreeViewInteraction.h

@@ -1,5 +1,6 @@
 #pragma once
 
+#include <XCEditor/Collections/UIEditorScrollViewInteraction.h>
 #include <XCEditor/Collections/UIEditorTreeView.h>
 
 #include <XCEngine/UI/Types.h>
@@ -14,9 +15,11 @@ namespace XCEngine::UI::Editor {
 
 struct UIEditorTreeViewInteractionState {
     Widgets::UIEditorTreeViewState treeViewState = {};
+    UIEditorScrollViewInteractionState scrollViewInteractionState = {};
     ::XCEngine::UI::Widgets::UIKeyboardNavigationModel keyboardNavigation = {};
     std::string selectionAnchorId = {};
     ::XCEngine::UI::UIPoint pointerPosition = {};
+    float verticalOffset = 0.0f;
     bool hasPointerPosition = false;
 };