[Feature Request] Add field type and quantity to statistics in version 1.9

[NEKolev]

Please add to the top of the chart the selected fields (1). This will make it clear what they are, what was displayed if the chart is printed/saved.

Please add the quantity after the legend in parentheses, comma, dash or something else so that when printing/saving, it is visible what the quantity is (2).

If it can be added to the name while keeping the graphic besides the collection name (database name). For example 'Demo_Pie_20230517.jpg'