FEAT: add option to crop whitened time series

[ColmTalbot]

This PR implements the proposed modification to the likelihood from https://iopscience.iop.org/article/10.1088/1361-6382/ae1ac7/meta.

The main new feature is adding a crop_duration to the InterferometerStrainData and some accompanying utility code.

I modified how the GravitationalWaveTransient and BasicGravitationalWaveTransient call the data. I did not have to change the reference likelihood tests, so there is good evidence that this doesn't impact the numerical values when not using the cropping.

I suspect there is a performance penalty due to repeatedly whitening the data. There should be a way to cache this calculation, it just requires some cleverness about when the time/frequency masks might have changed.

• I'm not sure at this time how this should interact with accelerated likelihood, so I've left them alone.
• I also haven't validated how this interacts with time/calibration marginalization.