Crate linux_info

A crate that allows you to get information about your linux system.
It’s still a work in progress put the base modules cpu, memory, system and storage are already there.
Any feedback is welcome.

Async

At the moment every method here reads from /proc/* which does not benefit from async code.

Modules

cpu	Get cpu information.
memory	Get memory information.
storage	get information about drives and raids. Should this be called fs??
system	get system information (uptime, hostname, os release, load average, usernames, groups).
unit