Update eww volume meter to work with Pipewire

.config/eww/eww.yuck

@@ -7,8 +7,8 @@
 (defwidget sidestuff []
  (box :class "sidestuff" :orientation "h" :space-evenly false :halign "end"
   (metric :label "󰕾"
-   :value volume
-   :onchange "amixer -D pulse sset Master {}%")
+   :value { volume * 100 }
+   :onchange "VOL=$(bc -l <<<\"scale=2; {} / 100\") ; wpctl set-volume @DEFAULT_AUDIO_SINK@ $VOL")
   (metric :label "󰍛"
    :value {EWW_RAM.used_mem_perc}
    :onchange "")

.config/eww/scripts/getvol

@@ -1,12 +1,3 @@
-#!/bin/sh
+#!/usr/bin/env bash
 
-if command -v pamixer &>/dev/null; then
-    if [ true == $(pamixer --get-mute) ]; then
-        echo 0
-        exit
-    else
-        pamixer --get-volume
-    fi
-else
-    amixer -D pulse sget Master | awk -F '[^0-9]+' '/Left:/{print $3}'
-fi
+wpctl get-volume @DEFAULT_AUDIO_SINK@ | awk '{print $2}'