Support transactions manager with spring-data

[AV25242]

Today transaction support in spring-data-couchbase is provided by native Java SDK.
Enhance this support to provide annotation based transaction support.

references:

https://stackoverflow.com/questions/58498795/add-transaction-manager-for-a-couchbase-app-in-a-springboot-2-app-for-junit-tes

https://spring.io/guides/gs/managing-transactions/