Improve Version Command #21
Description
Based off a good catch from @mborgerson here: #20 (comment)
The version command of extract-xiso (-v) is out of date as it is just hard-coded into the source.
Ideally this should be set by the current repo's tag/branch, or the current commit hash (and maybe dirty status?).
Having versions/commit hashes can aid with debugging user issues, especially as we now ship compiled binaries.