Organized Rust project in library & binary

src/main.rs

@@ -1,3 +0,0 @@
-fn main() {
-    println!("Hello, world!");
-}

src/rb/lib.rs

@@ -0,0 +1,3 @@
+pub fn yeet() -> String {
+    String::from("yeet")
+}

src/rbs/main.rs

@@ -0,0 +1,5 @@
+use rb::yeet;
+
+fn main() {
+    println!("{}", yeet());
+}