Makes the lint output less verbose

[caugner]

• Uses ora to display a spinner with succeed/fail feedback.
• Removes console.log calls for succeeding checks.

[caugner]

Before:

After:

[ddbeck]

This is neat looking, @caugner! That said, it seems to break the behavior of the show-errors command.

Finally, I feel kinda unequipped to review adding a dependency, so this may need to wait for Florian's return.

[caugner]

@ddbeck Good catch! I wasn't aware of show-errors, but have fixed it now (db53b34):

Alright, I totally understand (and with show-errors it's less urgent already). Let's wait for Florian's return.

[caugner]

Note that I have meanwhile fixed the problem (which existed before and you can see in the last screenshot I posted) that show-errors didn't output the filenames in the summary below Problems in <n> files.

[caugner]

@Elchi3 Is there anything I can do to push this towards the release train?

[Elchi3]

Sorry this took so long to get to, @caugner! I've tested this locally with a few different error cases and I think it improves the log very well and is much more concise.

An enhancement might be to trim this even further and show the check mark only alongside directories that are all good and not list all files in that case. I'll defer that to a new issue or PR, though.