Add `junit5-migration-maven-kotlin` sample #105 PR

[daggerok]

Overview

This PR contains junit5-migration-maven-kotlin project demonstrates how to execute tests written in Java and Kotlin based on JUnit 5 using Maven. In addition, it showcases that existing JUnit 4 based tests can be executed in the same test suite as JUnit Jupiter based tests or any other tests supported on the JUnit Platform.

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