(minor) add autogen-modules to cabal file

[sboosali]

this cabal field (or the corresponding package.yaml fields):

  other-modules:
      Paths_terminal

should be:

  other-modules:
      Paths_terminal
  autogen-modules:
      Paths_terminal

See https://www.haskell.org/cabal/users-guide/developing-packages.html?highlight=autogen%20modules#autogenerated-modules

(as far as I can tell, it's not necessary for this project, but it is recommended)

[lpeterse]

Hi,

thanks for the several issues opened. I'll address them one by one.
This is still a work under progress and I'm currently making heavy changes to the project.
Stay tuned..