Re-Introduce Kotlin Extensions [DATACOUCH-521]

**[Michael Nitschinger](https://jira.spring.io/secure/ViewProfile.jspa?name=daschl)** opened **[DATACOUCH-521](https://jira.spring.io/browse/DATACOUCH-521?redirect=false)** and commented

In 4.0.x the kotlin extensions have been removed, but should be readded eventually


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No further details from [DATACOUCH-521](https://jira.spring.io/browse/DATACOUCH-521?redirect=false)