feat: plugin marketplace (#44) #168

Job	Run time
E2E / Playwright E2E	5m 17s
UI / Lint (TypeScript + ESLint)	30s
Skit / Test	9m 5s
UI / Build	33s
Skit / Build	12m 49s
Skit / Lint (fmt + clippy)	5m 25s
Plugins / Lint (Sherpa-ONNX Plugins)	50s
Plugins / Lint (Whisper)	50s
Plugins / Format Check	17s
Plugins / Lint (Simple Plugins)	31s
Plugins / Lint (NLLB)	2m 13s
UI / Test	17s
All Checks Passed	2s
	38m 39s

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