New port: misc/libsweep-lidar: Low-level Scanse Sweep LiDAR library

The library to communicate with the Scanse Sweep LiDAR device
that is able to scan the space around it and build its point cloud
representation.

PR: 223433
Submitted by: Hyun Hwang <hyun@caffeinated.codes>
Differential Revision: https://reviews.freebsd.org/D14691