Day 21 done and dusted, not general fits the input only

2023/day-21/src/main.rs

@@ -0,0 +1,12 @@
+#![warn(clippy::all, clippy::pedantic)]
+
+use day_21::part1;
+use day_21::part2;
+
+fn main() {
+    let input = include_str!("./input.txt");
+    let part1_result = part1(input, 64);
+    println!("part 1: {part1_result}");
+    let part2_result = part2(input, 26_501_365);
+    println!("part 2: {part2_result}");
+}