Tests

Draft implementation of point estimation #476

Job	Run time
lint	1m 24s
test (ubuntu-latest, 3.10, jax)	9m 19s
test (ubuntu-latest, 3.10, tensorflow)	22m 30s
test (ubuntu-latest, 3.10, torch)	18m 32s
test (ubuntu-latest, 3.11, jax)	10m 2s
test (ubuntu-latest, 3.11, tensorflow)	24m 28s
test (ubuntu-latest, 3.11, torch)	19m 30s
test (windows-latest, 3.10, jax)	16m 14s
test (windows-latest, 3.10, tensorflow)	32m 2s
test (windows-latest, 3.10, torch)	20m 32s
test (windows-latest, 3.11, jax)	17m 29s
test (windows-latest, 3.11, tensorflow)	35m 0s
test (windows-latest, 3.11, torch)	21m 44s
	4h 8m 46s

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