Add new `customer_choice` module #757

Job	Run time
test_slow (tests/clv/models/test_beta_geo_beta_binom.py)	12m 54s
test (3.10, false, tests/mmm --ignore tests/mmm/test_tvp.py --ignore tests/mmm/test_budget_optimi...	10m 5s
test_slow (tests/clv/models/test_pareto_nbd.py)	8m 47s
test (3.10, false, tests/mmm/test_tvp.py tests/mmm/test_budget_optimizer.py tests/mmm/test_hsgp.p...	6m 53s
test_slow (--ignore tests/clv/models/test_beta_geo_beta_binom.py --ignore tests/clv/models/test_p...	5m 22s
test (3.10, false, tests/clv)	8m 54s
test (3.10, false, --ignore tests/mmm --ignore tests/clv)	4m 49s
test (3.12, true, tests/mmm --ignore tests/mmm/test_tvp.py --ignore tests/mmm/test_budget_optimiz...	11m 54s
test (3.12, true, tests/mmm/test_tvp.py tests/mmm/test_budget_optimizer.py tests/mmm/test_hsgp.py...	7m 38s
test (3.12, true, tests/clv)	10m 8s
test (3.12, true, --ignore tests/mmm --ignore tests/clv)	6m 22s
	1h 33m 46s

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