On Distro's we want to be able to ship color schemes as packages
as such we need an easy way to add and remove them this commit
implements the simplest possible solution of one color scheme per
file

This is an initial commit for discussion its a while since ive written
much with efl so any feedback would be very welcome, I have
some further plans to add an option to just use a color scheme
that matches the name of the terminology theme.