feat(simd_caps): CPUID 7,1 + new x86 caps fields + AMX OS-gate in cpu_ops (salvage from #190) #432

Job	Run time
nostd/thumbv6m-none-eabi/stable	26s
native-backend/stable	8m 27s
format/stable	21s
Pass MSRV values to other jobs	4s
tier4-avx512-check	31s
hpc-stream-parallel/rayon	1m 20s
clippy/1.95.0	44s
docs/nightly	0s
nightly-simd-polyfill	0s
cargo-careful	0s
miri	0s
cross_test/${{ matrix.target }}/${{ matrix.rust }}	-1s
tests/1.95.0	11m 18s
tests/beta	10m 42s
tests/stable	11m 9s
blas-msrv	56s
conclusion	0s
	45m 57s

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