Using the 'alt' json return field to set the icon and change the icon
within waybar itself instead of doing so manually in the script. This
makes us a little more flexible and puts all the 'what' is rendered that
is specific to waybar into waybar (keeping the 'how' it's rendered in
the style.css).
Since the existing wayland module basically describes everything about
my 'desktop environment' setup already anyway, might as well rename it
accordingly. Additionally, mako is important for notifications in this
environment so it moves here as well.
