ci: detect host CPU SIMD features and bump benchmark workload #77

Job	Run time
Build Khronos OpenVX sample	1m 8s
build	2m 23s
vision-arithmetic	25s
graph	12s
baseline	10s
vision-filters	52s
image-ops	9s
vision-color	14s
vision-geometric	37s
data-objects	9s
vision-pyramid	9s
enhanced-vision (Phase 1 — Min/Max)	12s
vision-statistics	13s
vision-features	22s
Benchmark & compare (rustVX vs Khronos sample)	4m 51s
	12m 6s

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