security/pam_fprint: revive port

pam_fprint is a simple PAM module which uses libfprint's fingerprint
processing and verification functionality for authentication. In other
words, instead of seeing a password prompt, you're asked to scan your
fingerprint.

Submitter becomes maintainer. Is already maintainer of other ports.

PR: 269554
Approved by: flo (mentor)
Differential Revision: https://reviews.freebsd.org/D38628