Add example of Kotlin Coroutine and Reactive MongoDB mixture

[PikachuCacik]

There seems to be no example of using the CoroutineCrudRepository.
I am willing to take this issue since I am learning about the CoroutineCrudRespository.

[mp911de]

Have you seen https://github.com/spring-projects/spring-data-examples/blob/main/mongodb/kotlin/src/test/kotlin/example/springdata/mongodb/people/FlowAndCoroutinesTests.kt?

[PikachuCacik]

yup but isn't this for tests? I meant Webflux with coroutines for repository, controller, etc.

[mp911de]

Spring Data examples are focussed on Spring Data and not a general-purpose yard for all sorts of samples.