feat(nodes): add HW video codec backends (Vulkan Video H.264, VA-API AV1, NVENC/NVDEC AV1) #1034

Job	Run time
E2E / Pipeline Validation	11m 55s
E2E / Pipeline Validation (GPU)	2m 22s
E2E / Playwright E2E	12m 19s
Skit / Test (GPU)	2m 25s
Skit / Lint (fmt + clippy)	3m 47s
UI / Build	18s
UI / Lint (TypeScript + ESLint)	38s
UI / Test	21s
Skit / Build	11m 48s
Skit / Test	8m 19s
Plugins / Lint (NLLB)	2m 26s
Plugins / Format Check	16s
Plugins / Lint (Whisper)	40s
Plugins / Lint (Sherpa-ONNX Plugins)	55s
UI / Knip (unused code)	16s
Plugins / Lint (Simple Plugins)	53s
All Checks Passed	1s
	59m 39s

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