add new version of guessing game

attempt #2 at learning rust (i forget basic concepts)

guessing_game_refresher/Cargo.lock

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+# This file is automatically @generated by Cargo.
+# It is not intended for manual editing.
+version = 3
+
+[[package]]
+name = "guessing_game_refresher"
+version = "0.1.0"

guessing_game_refresher/Cargo.toml

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+[package]
+name = "guessing_game_refresher"
+version = "0.1.0"
+edition = "2021"
+
+# See more keys and their definitions at https://doc.rust-lang.org/cargo/reference/manifest.html
+
+[dependencies]

guessing_game_refresher/src/main.rs

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+use std::io;
+
+fn main() {
+    println!("Guess the number!");
+
+    println!("Please input your guess.");
+
+    let mut guess = String::new();
+
+    io::stdin()
+        .read_line(&mut guess)
+        .expect("Failed to read line");
+
+    println!("You guessed: {guess}");
+}