improve performance by doing profile guided optimisation

[CommanderStorm]

I think we could eek a few percent out of doing PGO and BOLT using cargo-pgo in the final docker build.
I have not looked into how much specifically.
I would expect at most an 3-5% boost in performance given how non-cpu heavy bbox is.

Docs: https://doc.rust-lang.org/beta/rustc/profile-guided-optimization.html
Blog: https://kobzol.github.io/rust/cargo/2023/07/28/rust-cargo-pgo.html

Note

the competition performance wise (maplibre/martin) currently also does not do this