Add fancy progress bar

[candrewlee14]

Let me ask you a difficult question... Does this progress indicator spark joy? - @andrewrk on #20

Personally, the progress step indicator didn't do it for me. Here's a fancy smooth progress bar instead that brings me a little more joy. YMMV 🤷

https://github.com/andrewrk/poop/assets/32912555/25a70ec7-1967-4d71-a22f-5932912682ed

[andrewrk]

that's fancy as shit! I love it!