[IMRF-92] Top level TemplateHaskell usages considered unused

[chshersh]

See next example:

{-# LANGUAGE TemplateHaskell #-}

import Control.Lens (makeLenses)

data Foo = Foo { _foo :: Int }

makeLenses ''Foo

In this case makeLenses is considered unused and removed by importify. This happens because of this bug in haskell-name library: haskell-suite/haskell-names#98