We want to be able to customize the invoice tables we see here https://wcc-rbkc-staff.koha-ptfs.co.uk/cgi-bin/koha/acqui/invoices.pl like we can for the order tables so we can add in the columns we want or hide columns as needed. In particular, we want to be able to add in total columns to this view so when we search for invoices we see the total amounts in the search results to quickly help us work out which invoice is which when we have limited information but know the total amount.