Feature request: Visually group bills that were created in one go

[helmo]

When you choose the bill type "Custom share per member" you end up with a transation for each selected member.

It would be nice if these are somehow grouped together in the list of bills.

It might be as easy a matching on the name and date and when equal to visually group then... maybe with something that is collapsible?
Also the SUM() could be shown for the grouped bills, that amount is currently not visible, but would be nice to have. That way it's easier to confirm the amount matches a receipt.

It's a minor issue but might improve the bill overview as it also gets a bit long this way.

Thanks for all the work on this project!