Support emacs-jupyter

[memeplex]

Describe your request

The default colors used from prompts (in -> green, out -> red) by emacs-jupyter look bland and low contrast with some doom themes. These settings did the job for me:

   (jupyter-repl-input-prompt ((t (:foreground ,(doom-color 'green)))))
   (jupyter-repl-output-prompt ((t (:foreground ,(doom-darken 'red 0.2)))))

Briefly explain its use-case

People doing data science directly on emacs-jupyter REPL or through org-babel or code-cells will benefit from this minimal change.