* move security content from spring-security-rest-full
* swagger update
* move query language to new module
* rename spring-security-rest-full to spring-rest-full
* group persistence modules
* group testing modules
* try fix conflict
* cleanup
* move security content from spring-security-rest-full
* swagger update
* move query language to new module
* rename spring-security-rest-full to spring-rest-full
* group persistence modules
* group testing modules
* try fix conflict
* JUnit5 with Mockito using @ExtendWith
* rename method:
givenUserWithExistingName_whenSaveUser_thenGiveUsernameAlreadyExistsError
rename this class according to the standard -- UserServiceUnitTest.java
