add git info/hash to scanLog and libYarr
Adds git versioning information into libYarr
To demonstrate this write a stub into scanLog
"yarr_version": {
"git_branch": "devel_git_hash",
"git_date": "2022-04-16 17:11:27 -0700",
"git_hash": "878fe3e130ca90d90ee4cc3dbb3b05ae920d54d2-dirty",
"git_subject": "add git info/hash to scanLog and libYarr",
"git_tag": "v1.3-276-g878fe3e1"
}