Include timing information

lib/aoc2023.ex

@@ -4,10 +4,13 @@ defmodule Aoc2023 do
       import Aoc2023.Common
 
       def main(input) do
+        {took, _} = :timer.tc fn ->
           parsed = parse(input)
           IO.puts("Part 1: #{part1(parsed)}")
           IO.puts("Part 2: #{part2(parsed)}")
         end
+        IO.puts("Took #{took / 1_000}ms")
+      end
     end
   end
 end