Add more details to the -V flag

[e-minguez]

Usually golang binaries include some more metadata (such as git commit, build date, go version, etc.):

9de807f7344f:~ # /usr/local/bin/nmc -V
nmc 0.1.0
9de807f7344f:~ # /usr/local/bin/hauler version
 __    __       ___       __    __   __       _______ .______
|  |  |  |     /   \     |  |  |  | |  |     |   ____||   _  \
|  |__|  |    /  ^  \    |  |  |  | |  |     |  |__   |  |_)  |
|   __   |   /  /_\  \   |  |  |  | |  |     |   __|  |      /
|  |  |  |  /  _____  \  |  `--'  | |  `----.|  |____ |  |\  \----.
|__|  |__| /__/     \__\  \______/  |_______||_______|| _| `._____|
hauler: Airgap Swiss Army Knife

GitVersion:    1.0.0
GitCommit:     79b240d
GitTreeState:  clean
BuildDate:     2024-02-20T13:02:55Z
GoVersion:     go1.21.7
Compiler:      gc
Platform:      linux/arm64

9de807f7344f:~ # /usr/bin/podman version
Client:       Podman Engine
Version:      4.8.3
API Version:  4.8.3
Go Version:   go1.21.5
Built:        Thu Jan  4 12:00:00 2024
OS/Arch:      linux/arm64

This is useful when reporting issues to be able to know which specific version is failing (I know nmc is perfect and it would never fail but just in case :) )

More info https://www.reddit.com/r/rust/comments/y0gxa0/compiling_version_information_into_rust_binary/