bench: add compositor pipeline benchmark for profiling #213

Job	Run time
Plugins / Lint (Whisper)	11m 15s
Plugins / Format Check	16s
Plugins / Lint (Simple Plugins)	34s
Plugins / Lint (Sherpa-ONNX Plugins)	53s
Skit / Build	8m 17s
UI / Lint (TypeScript + ESLint)	39s
Skit / Lint (fmt + clippy)	3m 55s
Plugins / Lint (NLLB)	2m 18s
UI / Build	27s
Skit / Test	5m 14s
UI / Test	21s
E2E / Playwright E2E	4m 55s
All Checks Passed	0s
	39m 4s

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