Implement FAASTA

[zaccharieramzi]

The FAASTA algorithm allows us to perform a FISTA algorithm in the analysis formulation. In our case we could see if the FAASTA still performs well with the new restarting options.

Since the FISTA with an orthogonal transform is way faster than the Condat-Vu, we are going to see now if this holds true even when we have to compute an extra inner iteration.