Add guide for Lombok

[GuentherJulian]

In the devonfw-ide repo there is a documentation on how to add Lombok support to the ide. The Quarkus reference application also uses Lombok. We can use it to reduce a lot of the boiler-plate code. So we should add a new guide describing what Lombok is and how to integrate and use it. The usage should still left rather optional.

[EduardKrieger]

merged with PR 441 issue can be closed