Improve error messages by adding helpful context

[douglascamata]

Is your feature request related to a problem? Please describe.

I'm currently trying to debug an issue when running github.com/shirou/gopsutil/v4/host.Info() in a Windows 2019 k8s node and for some reason it fails (I could already figure out the reason, but it's not the focus here). The error message is short and not helpful:

The system cannot find the file specified.

There's no information about which one of the InfoStat fields caused the issue and which file cannot be found.

Describe the solution you'd like

I would like the error to provide all the additional context related to the error. For example, if the problem happens when trying to fill in the InfoStat.KernelVersion field:

KernelVersion: the system cannot find the file "<whatever file it tried to find>"

Describe alternatives you've considered

None so far.

Additional context

None so far.

[s0ders]

Working on a refactor (on the host package) to use fmt.Errorf on some key error returns to add some textual context in order to make error messages more helpful.

[s0ders]

The PR has been merged, I believe this should fix your issue @douglascamata

[douglascamata]

@s0ders thank you!