adding a simple julia implementation of an fft using the cooley_tukey algorithm. This heavily follows: https://jakevdp.github.io/blog/2013/08/28/understanding-the-fft/
adding a simple julia implementation of an fft using the cooley_tukey algorithm.
This heavily follows: https://jakevdp.github.io/blog/2013/08/28/understanding-the-fft/

leios/simuleios,leios/simuleios