docs(server): improve first-contributor experience #192

Job	Run time
Skit / Lint (fmt + clippy)	4m 37s
UI / Test	17s
Skit / Test	9m 49s
Skit / Build	15m 43s
E2E / Playwright E2E	4m 51s
Plugins / Lint (Simple Plugins)	40s
Plugins / Lint (Sherpa-ONNX Plugins)	49s
UI / Lint (TypeScript + ESLint)	32s
UI / Build	29s
Plugins / Lint (NLLB)	2m 7s
Plugins / Format Check	20s
Plugins / Lint (Whisper)	36s
All Checks Passed	3s
	40m 53s

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