Optional source: Provide temperature for disk if module drivetemp is loaded

[darnuria]

• Platform: Linux Version minimal ?
• Data: temperature

It's possible to read-out temperatures without messing with smart with drivetemp HWMON exposed file API.

Comes from a discussion between @GuillaumeGomez and I. You can assign me if I have done nothing until last-week will update the ticket I think. :)

Why? May help in project like https://github.com/Gandi/jbod-rs avoiding a process spawning.

Related PR: #823

[darnuria]

Did some research. We pass over the disk temperature... But disk did'nt have _label why I don't know.

The problem is over-here:

sysinfo/src/linux/component.rs

Line 70 in c1a6c6f

let mut found_label = None;

[darnuria]

And by the way: I am on the problem :)

[darnuria]

Done by #827