feat: multicore pipelining with wave-based parallel execution #208

Job	Run time
Build rustVX (main)	1m 41s
build	1m 44s
Build Khronos OpenVX sample	57s
graph	15s
baseline	14s
KHR extension: pipelining fast	11s
KHR extension: user-data-object	8s
KHR extension: pipelining stress	42s
data-objects	10s
Enhanced-Vision: Post-Processing	12s
image-ops	12s
vision-filters	1m 0s
Enhanced-Vision: Feature Extraction	10s
vision-pyramid	12s
vision-geometric	34s
Perf gate (PR vs main)	4m 58s
vision-features	17s
vision-arithmetic	31s
Enhanced-Vision: Control Flow	8s
vision-statistics	10s
Enhanced-Vision: Tensor Transforms	9s
vision-color	12s
Enhanced-Vision: Tensor Arithmetic	11s
Enhanced-Vision: Advanced Filtering	1m 5s
Benchmark & compare (rustVX vs Khronos sample)	5m 50s
	21m 53s

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