plugins\inputs\system\ps.go:220:26: undefined: host.Warnings

[powersj]

Describe the bug
On FreeBSD, Darwin, and Windows, builds using host.Warnings now fail. It appears that this was removed in #1347, but then re-added only for Linux in #1379. Telegraf uses these warnings with the call to host.SensorsTemperatures() as it seems to almost always return an error. We need to unwrap the error to see if it contains only a warning:

plugins/inputs/system/ps.go:220:26: undefined: host.Warnings

To Reproduce

package main

import (
    "errors"
    "fmt"
    "os"

    "github.com/shirou/gopsutil/host"
)

func main() {
    temp, err := host.SensorsTemperatures()
    if err != nil {
 	var hostWarnings *host.Warnings
	if !errors.As(err, &hostWarnings) {
	    fmt.Println(err)
	    os.Exit(1)
	}
    }
    fmt.Println(temp)
}

Expected behavior

Sensors print out results, ignoring warnings:

[{"sensorKey":"nvme_composite","temperature":33.85,"sensorHigh":74.85,"sensorCritical":79.85} {"sensorKey":"nvme_composite","temperature":47.85,"sensorHigh":89.85,"sensorCritical":94.85} {"sensorKey":"k10temp_tctl","temperature":46.5,"sensorHigh":0,"sensorCritical":0} {"sensorKey":"k10temp_tccd1","temperature":36.25,"sensorHigh":0,"sensorCritical":0} {"sensorKey":"k10temp_tccd2","temperature":40.5,"sensorHigh":0,"sensorCritical":0}]

Environment (please complete the following information):

• Windows: [paste the result of ver]
• Linux: [paste contents of /etc/os-release and the result of uname -a]
• Mac OS: [paste the result of sw_vers and uname -a
• FreeBSD: [paste the result of freebsd-version -k -r -u and uname -a]
• OpenBSD: [paste the result of uname -a]

Additional context

Yes we are cross-compiling, this was reported to us in Telegraf in influxdata/telegraf#12841