Display fan speed in RPM

[Zaechus]

Describe the feature request

It would be convenient to display the fan speed in RPM possibly in the temperatures section of bottom.

[Saarsk]

I've been looking for this as well. The temp section could be renamed "sensors" or become a new section (although battery read-outs are also to be considered sensors so it raises the question whether temp section should remain and sensors section to become an additional section (type)).

Graph view of sensors would be useful too.

[ClementTsang]

If I was to add this (and I think it would be an interesting idea, though I/whoever is tackling this would need to see how the heck to grab this data), I would probably do this as a separate widget, yeah.

Also yes, a graph view of temps (or other sensors/tabular data) is something I'm interested in doing as well.