feat: add warmup in the tinybench compat layer

[avalanche-staging[bot]]

CodSpeed Performance Report

Merging #2 feat/tinybench-warmup (2bf4a4c) will improve performances by 47.3%.

Summary

🔥 2 improvements ❌ 0 regressions ✅ 2 untouched benchmarks

🆕 0 new benchmarks ⁉️ 0 dropped benchmarks

Benchmarks breakdown

	Benchmark	main	feat/tinybench-warmup	Change
🔥	switch 1	3,318.9 µs	15 µs	99.55%
🔥	switch 2	173.2 µs	16.1 µs	90.71%