Add a bind record codgen

[paluh]

We can imagine an extension to the current mkFFI which actually produces an record of bound methods / properties as follows like:

_Person ::
  { firstName :: Person -> Effect String
  , lastName :: Person -> Effect String
  , setFirstName :: Person -> String -> Effect Unit
  , setLastName :: Person -> String -> Effect Unit
  }
_Person = mkNewtypedFFI (Proxy :: Proxy Person)


bindPerson p =
  { firstName: _Person.firstName p
  , lastName: _Person.lastName p
  , setFirstName: _Person.setFirstName p
  , setLastName: _Person.setLastName p
  }

So finally users could just do:

do
  let
    p' = bindPerson p
  p'.setFirstName "John"
  n <- p'.firstName

We should just generate this bindPerson function using heterogenous and warn that there is an extra allocation behind the scene.