feat(nodes): add HW video codec backends (Vulkan Video H.264, VA-API AV1, NVENC/NVDEC AV1) #1037

Job	Run time
Skit / Build	11m 3s
Skit / Test	7m 43s
Skit / Test (GPU)	2m 24s
Skit / Lint (fmt + clippy)	3m 43s
Plugins / Lint (Whisper)	38s
UI / Build	20s
UI / Knip (unused code)	19s
Plugins / Lint (NLLB)	2m 16s
Plugins / Format Check	20s
Plugins / Lint (Simple Plugins)	44s
Plugins / Lint (Sherpa-ONNX Plugins)	1m 1s
E2E / Pipeline Validation (GPU)	2m 29s
UI / Test	20s
E2E / Pipeline Validation	6m 45s
E2E / Playwright E2E	15m 46s
UI / Lint (TypeScript + ESLint)	48s
All Checks Passed	0s
	56m 39s

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