read a .policyx file created by SARSOP and return alpha vectors and associated actions.
Usage
read_policyx(file = "output.policyx")
Value
a list, first element "vectors" is an n_states x n_vectors array of alpha vectors,
second element is a numeric vector "action" of length n_vectors whose i'th element indicates
the action corresponding to the i'th alpha vector (column) in the vectors array.