Add code to generate SNRs for abitrary sensitivity curves

[avivajpeyi]

Currently, we have some cached injection SNRs using LVK design, O1, O3 sensitivity
https://github.com/TeamCOMPAS/COMPAS/blob/dev/compas_python_utils/cosmic_integration/selection_effects.py

However, we have no code to create new SNRs datasets for new PSD curves (say the O4 curve, or the updated O3 curve -- the one used SimNoisePSDaLIGOMidHighSensitivityP1200087 is outdated).

[ilyamandel]

@avivajpeyi , @stegmaja -- is this something one of you is planning to work on?

[avivajpeyi]

Hey @ilyamandel -- i assume we'll need this for our surrogate LnL work (so yes, once we get to testing with real data).