zHaskell supports defining operators using unicode out of the box:

$ docker run -it --rm haskell:9 GHCi, version 9.10.1: https://www.haskell.org/ghc/ 😕 for help ghci> a ÷ b = a / b ghci> 9 ÷ 5 1.8

The list you link to is the supported unicode equivalents for builtin operator keywords.