Add automatic comparison to JHOVE (e. g. Bad Peggy)

[friesey]

Dev Effort

TBC

Description

Dear Folks, the idea came up during our OPF DIG calls. It might be nice to add some other tools where available for format validation like Bad Peggy for JPEG to have an alternative. I fear that there are no alternatives for Standard PDF, but for most of the others there should be something. Best, Yvonne