Datagrid 2 Columns Selector: Allow custom buttons in ColumnSelecter Column

When enabling the show/hide columns function of a datagrid2 it creates an additional column for the ColumnSelector Button(eye) in the header, but empty data in each row. 

When using buttons in each row to allow actions with the rows data, this often results in a column without header, but buttons in each row and a column with the ColumnsSelector (eye) in the header and no data in the rows.

This takes additional space and it would be nice to add this custom buttons into the column of the ColumnSelector to save some space.

So either make a ColumnSelecor "widget" / Button that i can place into a header or make the ColumnSelector created column available for custom content

here you see the missed opportunity