Tests

add sphinx configuration #407

Job	Run time
run-tests (matrix, base, ubuntu-latest, 3.9, false)	2m 28s
run-tests (matrix, base, ubuntu-latest, 3.12, false)	2m 49s
run-tests (tensor, base, ubuntu-latest, 3.9, false)	2m 44s
run-tests (tensor, base, ubuntu-latest, 3.12, false)	2m 45s
run-tests (macos-latest, matrix, base, 3.11, true)	2m 47s
run-tests (macos-latest, tensor, base, 3.11, false)	2m 46s
run-tests (windows-latest, matrix, openblas, 3.11, false, True)	2m 33s
run-tests (windows-latest, tensor, openblas, 3.11, false, True)	2m 29s
run-tests (torch, tensor, ubuntu-latest, 3.11, false)	2m 46s
run-tests (jax, tensor, ubuntu-latest, 3.11, false)	2m 46s
run-tests (tensorflow, tensor, ubuntu-latest, 3.11, false)	2m 46s
run-tests (slepc, matrix, ubuntu-latest, 3.11, false)	2m 47s
	32m 26s

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