Nadvent of Code - 2022 Day 9

As a warmup for this year's Advent of Code, I'm re-reading and posting my solutions to last year's challenges. You can read, run and edit today's solution by following the post link.

Today we had to drag a segmented worm's head around a grid according to a given set of directions and count how many cells the tail visited. For part 2, the worm got longer. Solving this felt much easier than yesterday's challenge. That must mean tomorrow will be tricky...