Add new scripts for system monitoring and remove deprecated scripts

scripts/volume

@@ -0,0 +1,28 @@
+#!/bin/sh
+
+# Prints the current volume or   if muted.
+
+vol="$(wpctl get-volume @DEFAULT_AUDIO_SINK@)"
+
+# If muted, print   and exit.
+[ "$vol" != "${vol%\[MUTED\]}" ] && echo "  " && exit
+
+vol="${vol#Volume: }"
+
+split() {
+	# For ommiting the . without calling and external program.
+	IFS=$2
+	set -- $1
+	printf '%s' "$@"
+}
+
+vol="$(printf "%.0f" "$(split "$vol" ".")")"
+
+case 1 in
+$((vol >= 70))) icon="  " ;;
+$((vol >= 30))) icon=" " ;;
+$((vol >= 1))) icon=" " ;;
+*) echo " " && exit ;;
+esac
+
+echo "$icon$vol%"