Added implementation for User W.I.P

core/pom.xml

core/src/main/java/cz/fi/muni/pa165/core/user/.gitkeep

.../src/main/java/cz/muni/fi/pa165/core/CoreApplication.java

.../src/main/java/cz/muni/fi/pa165/core/DataInitializer.java

.../main/java/cz/muni/fi/pa165/core/common/DomainMapper.java

.../main/java/cz/muni/fi/pa165/core/common/DomainObject.java

...main/java/cz/muni/fi/pa165/core/common/DomainService.java

core/src/main/java/cz/muni/fi/pa165/core/company/.gitkeep

core/src/main/java/cz/muni/fi/pa165/core/device/.gitkeep

core/src/main/java/cz/muni/fi/pa165/core/house/.gitkeep

core/src/main/java/cz/muni/fi/pa165/core/smartmeter/.gitkeep

core/src/main/java/cz/muni/fi/pa165/core/user/User.java

.../main/java/cz/muni/fi/pa165/core/user/UserController.java

.../src/main/java/cz/muni/fi/pa165/core/user/UserMapper.java

.../main/java/cz/muni/fi/pa165/core/user/UserRepository.java

...src/main/java/cz/muni/fi/pa165/core/user/UserService.java

core/src/main/java/cz/muni/fi/pa165/core/user/UserType.java

.../test/java/cz/muni/fi/pa165/core/CoreApplicationTest.java

microservice3/pom.xml

...ce3/src/main/java/cz/muni/fi/pa165/microservice3/App.java