Add experiment_dataloader helper API (PR 5 of N) #38

Job	Run time
unit_tests (ubuntu-latest, 3.9, tiledbsoma~=1.9.0 'numpy<2.0.0')	2m 31s
unit_tests (ubuntu-latest, 3.9, tiledbsoma~=1.10.0 'numpy<2.0.0')	2m 35s
unit_tests (ubuntu-latest, 3.9, tiledbsoma~=1.11.0)	2m 39s
unit_tests (ubuntu-latest, 3.9, tiledbsoma~=1.12.0)	3m 8s
unit_tests (ubuntu-latest, 3.9, tiledbsoma~=1.13.0)	2m 29s
unit_tests (ubuntu-latest, 3.9, tiledbsoma~=1.14.0)	2m 43s
unit_tests (ubuntu-latest, 3.10, tiledbsoma~=1.9.0 'numpy<2.0.0')	2m 39s
unit_tests (ubuntu-latest, 3.10, tiledbsoma~=1.10.0 'numpy<2.0.0')	2m 41s
unit_tests (ubuntu-latest, 3.10, tiledbsoma~=1.11.0)	3m 30s
unit_tests (ubuntu-latest, 3.10, tiledbsoma~=1.12.0)	2m 48s
unit_tests (ubuntu-latest, 3.10, tiledbsoma~=1.13.0)	2m 38s
unit_tests (ubuntu-latest, 3.10, tiledbsoma~=1.14.0)	2m 40s
unit_tests (ubuntu-latest, 3.11, tiledbsoma~=1.9.0 'numpy<2.0.0')	2m 34s
unit_tests (ubuntu-latest, 3.11, tiledbsoma~=1.10.0 'numpy<2.0.0')	2m 29s
unit_tests (ubuntu-latest, 3.11, tiledbsoma~=1.11.0)	2m 36s
unit_tests (ubuntu-latest, 3.11, tiledbsoma~=1.12.0)	3m 52s
unit_tests (ubuntu-latest, 3.11, tiledbsoma~=1.13.0)	2m 38s
unit_tests (ubuntu-latest, 3.11, tiledbsoma~=1.14.0)	2m 32s
	49m 42s

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