Add a benchmarking suite

There's been a couple of PRs lately that have been opened in hopes of speeding things up. We should probably add a good set of benchmarks that can be re-used by everyone trying to make an optimization change so as to make changes like these easier to evaluate.

Ideally, we can also yank some of Ruffs benchmarks to also see how much a change affects it does heavily consume this library.

此 issue 未指定任何檔案、測試或進入點。首先確定可重複使用的基準測試應放在哪裡，以及應如何納入或比較 Ruff 的基準測試。完成的標準是存在一個基準測試套件，貢獻者可以使用它來評估最佳化變更，其中包括預期的 Ruff 比較。