restructure and optimize (fuck you @Doloro1978)

src/bin/day01.rs

@@ -0,0 +1,12 @@
+use aoc_2025::day01;
+use color_eyre::Report;
+
+fn main() -> Result<(), Report> {
+    color_eyre::install()?;
+    let data = day01::data("inputs/day01.txt")?;
+    let code1 = day01::part1(&data)?;
+    let code2 = day01::part2(&data)?;
+    println!("code1: {code1}");
+    println!("code2: {code2}");
+    Ok(())
+}