conf: Rewrite config to work with lib.rs and main.rs

Cargo.toml

@@ -1,6 +1,14 @@
 [package]
-name = "Learning"
+name = "learning"
 version = "0.1.0"
 edition = "2024"
 
-[dependencies]
+[lib]
+name = "learning"  
+path = "src/lib.rs"  
+
+[[bin]]
+name = "learning-bin"  
+path = "src/main.rs"
+
+[dependencies]