feat(nodes): add HW video codec backends (Vulkan Video H.264, VA-API AV1, NVENC/NVDEC AV1) #1047

Job	Run time
Skit / Lint (fmt + clippy)	2m 32s
Skit / Test	5m 18s
Skit / Test (GPU)	2m 59s
Skit / Build	5m 15s
UI / Build	18s
UI / Lint (TypeScript + ESLint)	36s
UI / Knip (unused code)	18s
UI / Test	23s
Plugins / Lint (Simple Plugins)	47s
Plugins / Format Check	17s
E2E / Playwright E2E	5m 15s
E2E / Pipeline Validation (GPU)	2m 18s
Plugins / Lint (NLLB)	2m 27s
E2E / Pipeline Validation	5m 15s
Plugins / Lint (Whisper)	37s
Plugins / Lint (Sherpa-ONNX Plugins)	48s
All Checks Passed	1s
	35m 24s

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