WIP: NR support gwpy example
This is an alternative to !251 (closed) so only one of the two options should be merged.
In the MR I have tried to use the gwpy TimeSeries object as the values of the returned dict.
I also have an example plotting script where I also use the gwpy functions to compute the Fourier transform.
I am not an expert with gwpy so I probably didn't implement it properly. But gpwy has a lot of nice features like convert between lal types and pycbc types. This is quite attractive as you could make use of lal and pycbc functionality more easily.
Let me know what you think!