Add more examples

[ccbrown]

We can always use more examples!

For inspiration, Ratatui has a lot of great examples. It might be good to port some of them.

[orhun]

Great stuff! We can also draw some inspiration from iocraft examples/API as well :)

[ccbrown]

Unfortunately my first experience attempting to actually run the Ratatui examples didn't go too well. 😕

ratatui/ratatui#1387

[ccbrown]

Textual also has some really impressive examples. They almost make you forget you're looking at a terminal. And they work flawlessly in macOS's Terminal.app, which I consider a requirement for examples. After all, a well crafted TUI should look beautiful everywhere!

When I implement #17 I'll likely add an example or two in the style of Textual.

Edit: That's done and we now have a nice looking calculator in the style of Textual's: