~/.config/dwm/status.sh: Use icons in status bar

Including one that indicates whether the laptop is currently plugged in.

.config/dwm/status.sh

@@ -7,9 +7,13 @@ charge_path="/sys/class/power_supply"
charge_full=`cat $charge_path/BAT0/energy_full`
charge_now=`cat $charge_path/BAT0/energy_now`
charge_rate=$(($charge_now * 100 / $charge_full ))
status="$status$charge_rate%"
charge_icon=" "
if [ "$(cat $charge_path/AC/online)" -eq "1" ]; then
	charge_icon="⚡"
fi
status="$status   $charge_icon $charge_rate%"
# date
status="$status   $(date '+%a %b %_d %H:%M')"
status="$status   🕐 $(date '+%a %b %_d %H:%M')"
echo "$status"