Update ktlint descriptor to support list_of_files and better error counting

[Yann-J]

Fixes #1441

Proposed Changes

1. Enable list_of_files mode in KOTLIN_KTLINT (which it supports OOB)
2. Configured regex to better count violations

Readiness Checklist

Author/Contributor

• Add entry to the CHANGELOG listing the change and linking to the corresponding issue (if appropriate)
• If documentation is needed for this change, has that been included in this pull request

Unfortunately, I haven't been able for the life of me to run a proper build and test, as make is causing all sorts of headaches that I couldn't figure out... The make version in MacOS is very old (3.81 from 2006) and the newer version I installed (4.4.1, called gmake) somehow hangs even on trivial tasks like gmake help.

So I've only been able to test by compiling a local image, since the dockerfile appears unchanged (docker buildx build -f linters/kotlin_ktlint/Dockerfile .) and run it, but I couldn't rebuild everything and run tests...

Reviewing Maintainer

• Label as breaking if this is a large fundamental change
• Label as either automation, bug, documentation, enhancement, infrastructure, or performance

[echoix]

How do we know that the sum/count of errors work? Is there a part of the tests that should cover it? Otherwise it's good to me!

[nvuillam]

@echoix when there is a regex defined to identify the number of errors, the test passes only if the number found is >= 2 :)

[nvuillam]

Amazing @Yann-J , thanks a lot :)

[echoix]

@echoix when there is a regex defined to identify the number of errors, the test passes only if the number found is >= 2 :)

Good to know!