Dependency towards the home crate

[gabrik]

Summary

Current zenoh-util implementation relies on the home crate to get the HOME directory of the user. It seems that this is necessary because std::env::home_dir is wrong on Windows, at least according to what the crate claims in its readme.

In rust there is this issue tracking the state of std::env::home_dir. I think we should follow and remove as soon as possible this "useless" dependency.