Allow reordering of items in notebook mode

[paoliniluis]

Is your feature request related to a problem? Please describe.
Right now, you can't change the order of items in the notebook mode. E.g. change the sort items, or change the order of the aggregations.

Describe the solution you'd like
Change the order of the items via drag and drop

Describe alternatives you've considered
Right now you need to remove, and add again

How important is this feature to you?
Requested by one of our customers and I think it's a great ergonomic win

Additional context
NA