Add polybar configuration

Signed-off-by: Severin Kaderli <severin.kaderli@gmail.com>

.config/polybar/launch.sh

@@ -0,0 +1,11 @@
+#!/usr/bin/env sh
+
+# Terminate already running bar instances
+killall -q polybar
+
+# Wait until the processes have been shut down
+while pgrep -x polybar >/dev/null; do sleep 1; done
+
+# Launch bar1 and bar2
+polybar top &
+polybar top2 &