Add certified field kernel substrate plan to ndarray index #482

Job	Run time
nostd/thumbv6m-none-eabi/stable	21s
clippy/1.95.0	39s
native-backend/stable	7m 44s
format/stable	20s
miri	1m 10s
hpc-stream-parallel/rayon	1m 17s
Pass MSRV values to other jobs	3s
cargo-careful	36s
docs/nightly	46s
tier4-avx512-check	26s
nightly-simd-polyfill	35s
cross_test/${{ matrix.target }}/${{ matrix.rust }}	0s
blas-msrv	47s
tests/beta	11m 9s
tests/stable	10m 27s
tests/1.95.0	10m 45s
conclusion	0s
	47m 5s

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