added cycle_pactl.sh

(cherry picked from commit 113c31566b)

bin/cycle_pactl.sh

@@ -0,0 +1,17 @@
+#!/bin/bash
+set -e
+
+default_sink=$(pactl info | grep "Default Sink:" | cut '-d ' -f3)
+sinks=$(pactl list short sinks | cut -f2)
+
+# for wrap-around
+sinks="$sinks
+$sinks"
+
+next_sink=$(echo "$sinks" | awk "/$default_sink/{getline x;print x;exit;}")
+
+pactl set-default-sink "$next_sink"
+pactl list short sink-inputs | \
+  cut -f1 | \
+  xargs -I{} pactl move-sink-input {} "$next_sink"
+