ListBox column resize and reorder events

Add ListBox support for column resize and column reorder workflows. Users should be able to detect when a column is resized, detect when a column is moved, and opt in or out of user-driven column reordering.

Proposed public API from the source discussion:

Sub ColumnResized(column As Integer)
End Sub

Sub ColumnMoved(oldPosition As Integer, newPosition As Integer)
End Sub

ListBox1.AllowColumnReorder = True

This helps desktop apps persist user column layout choices, react to list layout changes, and disable column reordering where a fixed column order is required.