Add a `--version` argument

[artemdinaburg]

The binaries (sleigh-lift) should take a --version argument that outputs relevant version information; ideally we want:

• Git commit hash of the build
• Any ghidra component versions used

[ekilmer]

Just a note that the git executable should not be required to build sleigh. If someone downloads a zip of the repo without git info, they should still be able to build and get some version info like Ghidra commit/version used (because that is known by CMake).