making 2023 a generic aoc repo

2023/day-5/src/part1.rs

@@ -1,6 +1,6 @@
 #![warn(clippy::all, clippy::pedantic)]
 
-pub fn part1(_input: &str) -> String {
+#[must_use] pub fn part1(_input: &str) -> String {
     "Not Finished".to_string()
 }
 

2023/day-5/src/part2.rs

@@ -1,6 +1,6 @@
 #![warn(clippy::all, clippy::pedantic)]
 
-pub fn part2(_input: &str) -> String {
+#[must_use] pub fn part2(_input: &str) -> String {
     "Not Finished".to_string()
 }