Create single threaded version using smol for async reading of the file 46 -> 40 seconds

src/main/rust/Cargo.toml

@@ -14,6 +14,7 @@ polars = { version = "0.36.2", features = ["csv", "lazy", "nightly", "streaming"
 rayon = "1.10.0"
 rustc-hash = "2.0.0"
 libc = "0.2.155"
+smol = "2.0.0"
 
 [dev-dependencies]
 criterion = { version = "0.5", features = ["html_reports"] }