Investigate path-scurry by @isaacs

[Uzlopak]

Prerequisites

• [X] I have written a descriptive issue title
• [X] I have searched existing issues to ensure the issue has not already been raised

Issue

Maybe we can find some better perf optimizations by investigating path-scurry and what it does differently?

https://www.npmjs.com/package/path-scurry

[gurgunday]

Has the same licensing issue as https://github.com/fastify/fastify-static/pull/406#pullrequestreview-1615330181

[Uzlopak]

It is not about using the package. It is about investigating what he did differently to improve the performance and maybe adapt it.