Allows someone to setup a quick poll decided by [ranked voting](https://en.wikipedia.org/wiki/Ranked_voting) (currently just [instant runoff](https://en.wikipedia.org/wiki/Instant-runoff_voting)).

To run:
* `nix run` on nixos/nix, otherwise:
* install [Haskell](https://www.haskell.org/ghcup/)
``` sh
    # assuming you manage ghc with ghcup
    # if not, set ghc 9.6.1 by other means
    ghcup install ghc 9.6.1
    ghcup set ghc 9.6.1
    
    cabal run rcv-site
```
* go to localhost:8081