[Polybar] Add polybar-themes installation script

polybar/panels/launch.sh

@@ -0,0 +1,14 @@
+#!/usr/bin/env bash
+
+# Add this script to your wm startup file.
+
+DIR="$HOME/.config/polybar/panels"
+
+# Terminate already running bar instances
+killall -q polybar
+
+# Wait until the processes have been shut down
+while pgrep -u $UID -x polybar >/dev/null; do sleep 1; done
+
+# Launch the bar
+polybar -q main -c "$DIR"/config.ini &