yambar: Add pipewire script

yambar/.config/yambar/pipewire.sh

@@ -0,0 +1,29 @@
+#!/bin/bash
+
+declare pipewire
+
+while true; do
+  pw="$(wpctl get-volume @DEFAULT_AUDIO_SINK@ | choose 1)"
+  muted="$(wpctl get-volume @DEFAULT_AUDIO_SINK@ | choose 2)"
+  pw2="$(echo "$pw * 100 / 1" | bc)"
+  if [[ "$muted" == "[MUTED]" ]]; then
+    pipewire="  $pw2"
+  else
+    if [[ "$pw2" -gt 59 ]]; then
+      pipewire="  $pw2"
+    else
+      if [[ "$pw2" -gt 0 ]]; then
+        pipewire="  $pw2"
+      else
+        pipewire="  $pw2"
+      fi
+    fi
+  fi
+
+  printf -- '%s\n' "pipewire|string|${pipewire}%"
+  printf -- '%s\n' ""
+
+  sleep 0.1
+done
+
+unset pipewire