chore: Warn on clippy::self_named_module_files

Author: Muscraft

src/cargo/lib.rs

@@ -4,6 +4,7 @@
 // Due to some of the default clippy lints being somewhat subjective and not
 // necessarily an improvement, we prefer to not use them at this time.
 #![allow(clippy::all)]
+#![warn(clippy::self_named_module_files)]
 #![allow(rustdoc::private_intra_doc_links)]
 
 //! # Cargo as a library