complete section 1, guessing game

common-programming-concepts/Cargo.toml

@@ -0,0 +1,7 @@
+[package]
+name = "common-programming-concepts"
+edition.workspace = true
+version.workspace = true
+license.workspace = true
+
+[dependencies]

common-programming-concepts/src/main.rs

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