pkgbase: Create a FreeBSD-periodic package

While here put the periodic files for some utilities in their own
packages.

MFC after: 2 weeks
Sponsored by: Beckhoff Automation GmbH & Co. KG
Differential Revision: https://reviews.freebsd.org/D33454

(cherry picked from commit b3d14eaccc5f606690d99b1998bfdf32a22404f6)