Add PR-X12 tensor container expansion capstone #483

Job	Run time
native-backend/stable	8m 27s
hpc-stream-parallel/rayon	1m 30s
format/stable	20s
tier4-avx512-check	28s
clippy/1.95.0	39s
nostd/thumbv6m-none-eabi/stable	22s
cargo-careful	42s
docs/nightly	53s
Pass MSRV values to other jobs	2s
nightly-simd-polyfill	38s
miri	1m 9s
cross_test/${{ matrix.target }}/${{ matrix.rust }}	0s
blas-msrv	55s
tests/stable	10m 33s
tests/beta	11m 12s
tests/1.95.0	11m 13s
conclusion	0s
	49m 3s

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