Polybar: Add MPD controls module

.config/polybar/config

@@ -63,7 +63,7 @@ border-top-size = 1
 
 modules-left = i3 cpu memory battery temp
 modules-center = mpd
-modules-right = backlight pulse date
+modules-right = mpd-controls backlight pulse date
 
 [bar/secondary]
 monitor = ${env:PB_MONITOR:eDP-1}
@@ -195,10 +195,25 @@ type = internal/mpd
 interval = 1
 
 format-online = <label-song> <label-time>
-format-offline-foreground = ${res/colors.bg-light}
 label-song = %artist% - %title%
 label-offline = mpd is offline
 
+[module/mpd-controls]
+type = internal/mpd
+interval = 1
+toggle-on-foreground = ${res/colors.fg}
+toggle-off-foreground = ${res/colors.bg-light}
+
+format-online = <icon-prev> <toggle> <icon-stop> <icon-next> <icon-repeat> <icon-random> <icon-consume>
+icon-prev = <<
+icon-pause = ||
+icon-play = |>
+icon-stop = []
+icon-next = >>
+icon-repeat = ()
+icon-random = )(
+icon-consume = ].
+
 [module/pulse]
 type = internal/pulseaudio
 format-volume = <ramp-volume> <label-volume>