Feature request: badges marking errors

[Mario Valle]

Is it possible, as other extensions do (e.g., Spell Right), to mark error lines with badges in the right vertical slider? The small red mark helps immensely to find where the error is in the whole file.
Thanks for considering!
mario

[Kevin Wenger]

I unfortunately do not have much time now to work on it. I'm bit busy.

I still encourage you to fork this repo & add the feature if you need it quickly ^^.
I would help you with pleasure if you face any struggle with the feature integration or any testing stuff.