Alllow File type filter as an option in Upload document

[mat44444]

Is your feature request related to a problem? Please describe. In form, that would be good to limit file type in Upload document part. As exemple, in some Form we only want to accept PDF type document.

Describe the solution you'd like When we configure the Upload document, having an option to add custum filter for file type would be good.

Describe alternatives you've considered Ask the client to resend document in the right format

Additional context