add toggle-mic-mute.sh script

also, adjust dunst config for it

bin/toggle-mic-mute.sh

@@ -0,0 +1,17 @@
+#! /bin/bash
+
+pactl list sources | grep -qi 'Mute: yes'
+state="$?"
+
+id="991050"
+appName="microphone-is-muted"
+
+if [[ "$state" == "0" ]]; then
+	# mic is muted
+	pactl set-source-mute @DEFAULT_SOURCE@ 0
+	dunstify -a "$appName" -u low -t 1000 -r "$id" "Actived microphone" "It's not muted now"
+else
+	# mic is not muted
+	pactl set-source-mute @DEFAULT_SOURCE@ 1
+	dunstify -a "$appName" -u low -t 1000 -r "$id" "Disabled microphone" "It's muted now"
+fi