Re-export modules from 'base'

[cdsmith]

We should add re-exports from the base package in codeworld-base. This works around the inability to import packages from base (because we hide it to allow imports from codeworld-base).

base:Prelude should be re-exported as HaskellPrelude
Other common modules (Data.List, Data.Function, Control.Monad, etc.) should be re-exported.

For types, it's important to re-export the same types, since other packages that can be imported directly from student programs will depend on them.

[cdsmith]

The hardest part here is listing which modules to re-export. Then it just comes down to writing a bunch of files like:

{-# LANGUAGE PackageImports #-}
module HaskellPrelude (module M) where
import qualified "base" Prelude as M