Describe your motivation

I would like to customize the toolbar in <AutoCrud> to add another button together (or in some cases instead) of the default New item button.

Describe the solution you'd like

A render prop option in AutoCrud that allows to provide custom contents to the toolbar and also render the default new item button there.

Describe alternatives you've considered

A slot property is a good candidate, but unfortunately less flexible in regards of the placement of the new item button vs other contents.

Additional context

https://vaadin.com/forum/t/autocrud-component-grid-refresh-issue-and-custom-toolbar-buttons/178472#p-306174-issue-2-adding-custom-buttons-to-auto-crud-toolbar-2