Enable link-time optimization when building Rust library in release mode

This decreases the compiled library size and improves performance.

codegen-units is also set to 1 to further optimize the compiled library.

Author: Calinou

rust/Cargo.toml

@@ -10,6 +10,10 @@ version = "1.0.0"
 [lib]
 crate-type = ["cdylib"]
 
+[profile.release]
+lto = true
+codegen-units = 1
+
 [dependencies]
 anyhow = "1.0.38"
 approx = "0.4.0"