Move RefinementInterface to new hierarchy

ma.cabal

src/MA/Algorithm.hs

src/MA/Algorithm/Initialize.hs

src/MA/Algorithm/Split.hs

src/MA/FunctorExpression/Desorting.hs

src/MA/Functors/FixedProduct.hs

src/MA/Functors/MonoidValued.hs

src/MA/Functors/Powerset.hs

src/MA/Functors/SomeFunctor.hs

src/MA/RefinementInterface.hs