chore: Tidy up .gitignore

.gitignore

@@ -1,10 +1,10 @@
 # Generated by Cargo
+
 # will have compiled files and executables
 /target/
 
-# Remove Cargo.lock from gitignore if creating an executable, leave it for libraries
+# These are backupfiles generated by Rust
-# More information here https://doc.rust-lang.org/cargo/guide/cargo-toml-vs-cargo-lock.html
-Cargo.lock
-
-# These are backup files generated by rustfmt
 **/*.rs.bk
+
+# Leave for libraries 
+/Cargo.lock