Added option for command on new line after prompt and made it fancy

[santicardona]

As the title says, added a couple of lines and changed config files and documentation to add the possibility to have a line break between prompt and command line.

This targets the issue #29 of this Repo and feature request #226 in the synth-shell Repo. The new look can be directly seen in the documentation but here a screen-capture anyways:

Hope the format is of your liking. Let me know if I can do anything else so that the request gets accepted.

[andresgongora]

Hi @santicardona . Thanks so much for you contribution, please update your PR and add yourself to the contributors file: https://github.com/andresgongora/synth-shell-prompt/blob/master/AUTHORS.md

I wrote this script several years ago. I remember I put it support for new lines using the parameter enable_vertical_padding=true # Add extra new line over prompt, which is (I recon) way less useful thank yours. However I'm not 100% sure how the old one used to work since I never used it myself. Would you mind checking and removing the old vertical padding if it does nothing that yours doesn't do better?

Maybe you also want to edit the README.md file to add your screenshot and a brief explanation somewhere

[santicardona]

Hi @andresgongora . The option enable_vertical_padding is there to add a padding before the prompt and the way I see it, it is still useful to have enough space between the command result and a new prompt. So I would not remove it.

Also, I already had updated the README and added the screenshot. Thanks for your quick reply.

[andresgongora]

Excellent then. Let's merge!