Add kotlin compatibility modes

[acktsap]

Describe the feature you request

Add these flag for kotlin backward compatibility

https://kotlinlang.org/docs/compatibility-modes.html

Just like this

https://github.com/naver/spring-batch-plus/blob/203ae5c6d46717a8b8b0c4fb489c3d8e341ca311/buildSrc/src/main/kotlin/spring.batch.plus.kotlin-conventions.gradle.kts#L16-L17

If the feature request is approved, would you be willing to submit a PR?

Yes