desktop: add polybar dotfiles

dotfiles/desktop/.config/polybar/launch.sh

@@ -0,0 +1,20 @@
+#!/usr/bin/env bash
+# Restart polybar on each connected monitor.
+
+polybar-msg cmd quit >/dev/null 2>&1 || true
+
+while pgrep -u "$UID" -x polybar >/dev/null; do
+  sleep 0.1
+done
+
+if command -v xrandr >/dev/null 2>&1; then
+  monitors=$(xrandr --query | awk '/ connected/ {print $1}')
+fi
+
+if [ -n "${monitors:-}" ]; then
+  for m in $monitors; do
+    MONITOR="$m" polybar main >/dev/null 2>&1 &
+  done
+else
+  polybar main >/dev/null 2>&1 &
+fi