feat(nodes): add HW video codec backends (Vulkan Video H.264, VA-API AV1, NVENC/NVDEC AV1) #1049

Job	Run time
Skit / Test	3m 20s
Skit / Test (GPU)	2m 49s
Skit / Lint (fmt + clippy)	2m 9s
Skit / Build	3m 20s
E2E / Pipeline Validation (GPU)	32s
Plugins / Lint (Sherpa-ONNX Plugins)	56s
Plugins / Lint (NLLB)	2m 26s
E2E / Playwright E2E	3m 20s
Plugins / Lint (Whisper)	48s
UI / Knip (unused code)	16s
Plugins / Format Check	18s
UI / Lint (TypeScript + ESLint)	37s
UI / Build	12s
E2E / Pipeline Validation	3m 20s
UI / Test	24s
Plugins / Lint (Simple Plugins)	48s
All Checks Passed	1s
	25m 36s

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