Add option to enable highlighting marked line

[epszaw]

Hello! Thank you for your awesome extension ✨
Does it possible to implement highlighting of "marked" line?

I means highlighting like current line, but with blue color.
Thank you and have a nice day.

[alefragnani]

Thank you @lamartire 👍 ,

I think you are asking the same as #98. There is even a PR #133 for that, but right now, I'm focused on other projects, so it will have to wait a bit. Stay tuned.

Hope this helps

[epszaw]

Yeah, that it! Thank you and good luck on your current project ✨