Adding item line number to quote table

Hello to everyone,

In the quotation screen, I want to add the line number (incrementing on each line and kept in the database) in front of the product lines. We need this very much. Anyone have any info on how to do it? I would be very happy if you could help me.
(There should also be line numbers when the pdf is generated)

Best regards


One option would be to add a custom product field and manually set the numbering.