feat: OpenVX Pipelining, Streaming & Batch Processing KHR extension #199

Job	Run time
build	2m 31s
Build Khronos OpenVX sample	45s
Build rustVX (main)	1m 31s
image-ops	9s
data-objects	12s
graph	9s
KHR extension: pipelining fast	8s
KHR extension: pipelining stress	37s
baseline	8s
KHR extension: user-data-object	13s
Enhanced-Vision: Control Flow	13s
Enhanced-Vision: Tensor Transforms	10s
vision-arithmetic	25s
vision-statistics	14s
vision-filters	55s
vision-features	21s
Enhanced-Vision: Post-Processing	14s
vision-pyramid	13s
Perf gate (PR vs main)	2m 43s
vision-color	11s
Enhanced-Vision: Feature Extraction	10s
Enhanced-Vision: Advanced Filtering	1m 1s
vision-geometric	32s
Enhanced-Vision: Tensor Arithmetic	8s
Benchmark & compare (rustVX vs Khronos sample)	5m 39s
	19m 32s

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