(SXHkD)~playerctl controls instead of mpc based commands

playerctl is a bit more generic and makes it easier to script
interactions.

Scripts/.local/scripts/spotify_volume

@@ -0,0 +1,9 @@
+#!/usr/bin/env bash
+
+if [[ $# -eq 0 ]]
+then
+    echo "$(mpc volume | tr -d 'volume: ' | tr -d '%')"
+elif [[ $# -eq 1 ]]
+then
+    playerctl --player=spotify volume "$(echo $1 | tr -d '%')"
+fi