Added shapes to my visual metronome.

I'm working on my first app, a simple visual metronome. So far I've just been showing it to my wife and friends, but I thought today would be a good day for my first daily standup on Indie Hackers!

I spent more time than I expected getting shapes figured out for each time signature the app supports, and I was surprised to learn that a 9-sided polygon (with equal sides) cannot fit within a circle and have all points touching the circle. Who knew?

Here are the shapes and also what it looks like in-app.