Integrating uploads of files on my site?

I am creating a site where I need to upload files into a repository. Is there a community sprinkle that has been done to upload files? If not I was thinking of using a php library and was wondering how to integrate it into Userfrosting? Thank you in advance!

There’s no such community sprinkle yet that I know of. You can find most of them here : https://github.com/topics/userfrosting-sprinkle

It is something we plan of integration inside UF eventually. See https://github.com/userfrosting/UserFrosting/issues/869.

The file upload can be done using standard forms. There should be something in the doc about that. As far as PHP libraries goes, you can add them using Composer.