Moves column to be after to base_column.
Use [class@Gtk.ListView] or [class@Gtk.ColumnView] instead
If base_column is null, then column is placed in the first position.
| this |
A `GtkTreeView` |
| column |
The `GtkTreeViewColumn` to be moved. |
| base_column |
The `GtkTreeViewColumn` to be moved relative to |