refactor(clippy): enforce dead code detection in library and CLI (#167)

Signed-off-by: Onuralp SEZER <onuralp@ultralytics.com>

Author: onuralpszr

src/lib.rs

@@ -1,6 +1,7 @@
 // Ultralytics 🚀 AGPL-3.0 License - https://ultralytics.com/license
 
 #![allow(clippy::multiple_crate_versions)]
+#![deny(dead_code)]
 #![cfg_attr(docsrs, feature(doc_cfg))]
 
 //! # Ultralytics YOLO Inference Library

src/main.rs

@@ -1,6 +1,7 @@
 // Ultralytics 🚀 AGPL-3.0 License - https://ultralytics.com/license
 
 #![allow(clippy::multiple_crate_versions)]
+#![deny(dead_code)]
 
 //! Ultralytics YOLO Inference CLI
 //!