Added current command to mpc controller

Signed-off-by: Byron Sanchez <byron@hackbytes.com>
Updated action validation style

Signed-off-by: Byron Sanchez <byron@hackbytes.com>
Updated ncmpcpp so a notification is displayed when the song changes

Signed-off-by: Byron Sanchez <byron@hackbytes.com>
Added a keybind for displaying the current song

Signed-off-by: Byron Sanchez <byron@hackbytes.com>