Better hwmon/platform support.

[Br31zh]

Hello,

I’d like to have power status frow hwmon (power1_average (my GPU) or power1_input (my CPU)), and maybe some temp graphs.

So I was thinking that adding a more "advanced" hwmon / platform / sensors options can be useful. Maybe adding support for a custom path, so it’s not needed to add every single type of sensors individually, something like this:

hwmon_path /sys/class/hwmon/hwmon0/power1_average factor offset

And some commands like hwmongraph and hwmongraph_path?