add elapsed time for each day to output

src/main.rs

@@ -1,7 +1,7 @@
-use std::{collections::HashMap, env::args};
-
 use advent_of_rust_2024::*;
 use itertools::Itertools;
+use std::time::Instant;
+use std::{collections::HashMap, env::args};
 
 fn main() {
     let mains: HashMap<u8, fn() -> ()> = HashMap::from_iter([
@@ -18,7 +18,15 @@ fn main() {
             .sorted_by_key(|entry| entry.0)
             .for_each(|(d, f)| {
                 println!("Day {d}:");
+                let start = Instant::now();
                 f();
+                let duration = start.elapsed();
+                println!(
+                    "{color}{italic}Took {duration:?}{reset_formatting}",
+                    color = "\x1b[38;5;247m",
+                    italic = "\x1b[3m",
+                    reset_formatting = "\x1b[0m"
+                );
             });
         return;
     };