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.

该 issue 未指定任何文件、测试或入口点。首先确定可复用的基准测试应放在哪里，以及应如何纳入或比较 Ruff 的基准测试。完成的标准是存在一个基准测试套件，贡献者可以使用它来评估优化更改，其中包括预期的 Ruff 比较。