Add `load_from_idata` method #899

Job	Run time
test_slow (tests/clv/models/test_beta_geo_beta_binom.py)	12m 57s
test (3.10, false, tests/mmm --ignore tests/mmm/test_tvp.py --ignore tests/mmm/test_budget_optimi...	11m 12s
test_slow (tests/clv/models/test_pareto_nbd.py)	8m 22s
test (3.10, false, tests/mmm/test_tvp.py tests/mmm/test_budget_optimizer.py tests/mmm/test_hsgp.p...	6m 55s
test_slow (--ignore tests/clv/models/test_beta_geo_beta_binom.py --ignore tests/clv/models/test_p...	4m 41s
test (3.10, false, tests/clv)	9m 11s
test (3.10, false, --ignore tests/mmm --ignore tests/clv)	5m 54s
test (3.12, true, tests/mmm --ignore tests/mmm/test_tvp.py --ignore tests/mmm/test_budget_optimiz...	12m 8s
test (3.12, true, tests/mmm/test_tvp.py tests/mmm/test_budget_optimizer.py tests/mmm/test_hsgp.py...	7m 47s
test (3.12, true, tests/clv)	10m 24s
test (3.12, true, --ignore tests/mmm --ignore tests/clv)	6m 8s
	1h 35m 39s

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