dwmblocks/statusbar: starting to add clickable buttons

LukeSmith made a guide on how to set this up.
I did it analog to him.
- clock shows the calendar
- internet shows nmtui

.local/bin/tools/statusbar/volume

@@ -1,7 +1,5 @@
 #!/bin/sh
 
-# by lukesmithxyz, checkout github.com/lukesmithxyz/voidrice
-
 [ "$(pulsemixer --get-mute)" = "1" ] && printf "\\n" && exit
 
 vol=$(pulsemixer --get-volume | awk '{print $1}')