Change data format to only use structured arrays

[kdund]

The inference_interface only stores np.arrays, and it is tidier, IMO to just stick with this, and let individual likelihoods use structured_array_to_dict at setting if it wants dicts.

At the moment setting w/o datasets names does not work, since the nt_likelihood branch misses the get_datasets_names(): raise NotImplementedError function, but otherwise, this worked well for both the gaussian and complex likelihood:

from alea.blueice_extended_model import BlueiceExtendedModel
import os
import alea
import numpy as np

alea_dir = os.path.dirname(alea.__file__)
config_path = os.path.join(alea_dir, "examples/unbinned_wimp_statistical_model.yaml")

# Initialize the statistical model
statistical_model = BlueiceExtendedModel.from_config(config_path)

complex_data = statistical_model.generate_data()
datanames = ["{:d}".format(i) for i in range(len(complex_data))]

statistical_model.store_data("complexdata.h5",[complex_data], data_name_list=datanames)

data, _ = ii.toydata_from_file("complexdata.h5")
[np.all(data[0][i] == complex_data[i]) for i in range(4)] #returns True, True, True, True

[github-actions]

Pull Request Test Coverage Report for Build 5655411007

• 0 of 4 (0.0%) changed or added relevant lines in 1 file are covered.
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Changes Missing Coverage	Covered Lines	Changed/Added Lines	%
alea/models/blueice_extended_model.py	0	4	0.0%

Totals
Change from base Build 5652428657:	0.0%
Covered Lines:	0
Relevant Lines:	2871

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