feat(nodes): add HW video codec backends (Vulkan Video H.264, VA-API AV1, NVENC/NVDEC AV1) #959

Job	Run time
Plugins / Lint (NLLB)	39m 32s
UI / Build	14s
Skit / Lint (fmt + clippy)	4m 25s
Skit / Build	12m 46s
Plugins / Format Check	17s
Plugins / Lint (Sherpa-ONNX Plugins)	51s
UI / Test	25s
Plugins / Lint (Simple Plugins)	50s
Skit / Test (GPU)	2m 5s
UI / Lint (TypeScript + ESLint)	48s
UI / Knip (unused code)	17s
E2E / Playwright E2E	16m 32s
Plugins / Lint (Whisper)	40s
Skit / Test	8m 7s
All Checks Passed	1s
	1h 27m 50s

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