Add To-do app examples: one for babashka and one with backend/auth?

[bzg]

It would be great to combine SimpleUI's simplicity with that of Babashka and provide an example, perhaps as a rewrite of babashka-htmx-todoapp?

Another example with basic auth on top of kit would be great.

I'm too new to htmx/simplui/kit to directly help with this but I'd be glad to test and enhance the docs. Thanks!