Hiccup example

[borkdude]

For now this is a replacement function for hiccup:

https://github.com/borkdude/babashka/blob/9661d8e3372e766046f22a6587050537b8b6a16f/examples/notes.clj#L21

In the future we are going to have babashka.html or babashka.hiccup.