[New Port] sysutils/ssd_report

Report SSD health by looking at SMART data. Supports `smartctl' from
sysutils/smartmontools but prefers `smart' from sysutils/smart. Also
supports JSON output upon request.

Reviewed by: mat (mentor)
Approved by: portmgr (mat), mat (mentor)
Sponsored by: Smule, Inc.
Differential Revision: https://reviews.freebsd.org/D15876