A spike for testing out using react-dnd with hx.
Currently implements the chess example from the dnd documentation site (without movement limitation).
Builds with shadow-cljs, so makes all of the environment assumptions that it does.
Run with npx shadow-cljs watch app, then open a Chrome browser at http://localhost:3000
Uses html5 dnd, so is not guaranteed to work in other browser than Chrome.
Enjoy!
