add MatrixProductState.from_fill_fn #162

Job	Run time
run-tests (matrix, base, ubuntu-latest, 3.9, false)	2m 46s
run-tests (matrix, base, ubuntu-latest, 3.10, false)	3m 18s
run-tests (matrix, base, ubuntu-latest, 3.11, false)	2m 46s
run-tests (tensor, base, ubuntu-latest, 3.9, false)	7m 0s
run-tests (tensor, base, ubuntu-latest, 3.10, false)	6m 41s
run-tests (tensor, base, ubuntu-latest, 3.11, false)	7m 6s
run-tests (macos-latest, matrix, base, 3.11, true)	3m 0s
run-tests (macos-latest, tensor, base, 3.11, false)	6m 55s
run-tests (windows-latest, matrix, base, 3.11, false)	6m 53s
run-tests (windows-latest, tensor, base, 3.11, false)	6m 55s
run-tests (torch, tensor, ubuntu-latest, 3.11, false)	6m 59s
run-tests (jax, tensor, ubuntu-latest, 3.11, false)	6m 59s
run-tests (tensorflow, tensor, ubuntu-latest, 3.11, false)	7m 0s
run-tests (slepc, matrix, ubuntu-latest, 3.11, false)	2m 45s
	1h 17m 3s

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