data processing support

[plquera]

If not already available, could we have functions that extract some distribution moments from the data report automatically? Not only average Rydberg densities, but also variances/standard deviations, etc. (this has been requested by a few users)

[Roger-luo]

I think this would be a good contribution (especially for hackathons), whoever wants to work on this before the core developers do it can just add this here https://github.com/QuEraComputing/bloqade-python/blob/545a5a94b5966958058337b2940e04dfc80503e5/src/bloqade/task/base.py#L209 in the same way of how rydberg_densities is implemented.