We use ktfmt as a code style checker and reformater with the
kotlinlang code style.
The gradle plugin is installed for all submodules through the
conventions plugin. It adds two gradle tasks
./gradlew ktfmtCheck and ./gradlew ktfmtFormat. The gradle plugin is configured to use kotlinlang.
ktfmt has an IntelliJ plugin which automatically replaces IntelliJ's
format command and applies ktfmt's formatting. The IntelliJ plugin must be configured to use kotlinlang under the
plugin's settings.