[Haskell] add search directories option to ghci

Debug with this

$ ghci src/Test/ParseCircus.hs 

will lead to a problem such as

src/Test/ParseCircus.hs:14:8:
    Could not find module ‘Language.ISOZ.Parser.SynTransformerTwo’
    Use -v to see a list of the files searched for.

Locations searched:
  Language/ISOZ/Parser/SynTransformerTwo.hs
  Language/ISOZ/Parser/SynTransformerTwo.lhs
  Language/ISOZ/Parser/SynTransformerTwo.hsig
  Language/ISOZ/Parser/SynTransformerTwo.lhsig

 To fix it, add more folders to search directories by -i option

$ghci src/Test/ParseCircus.hs -isrc:dist/build

See reference