Draft: Add spring-security part one

Update: src/main/java/carms/template/dto/TemplateUserDTO.java, src/main/java/carms/template/dto/TemplateDTO.java, src/main/java/carms/template/controller/RegistrationController.java, src/main/java/carms/template/controller/TemplateController.java, src/main/java/carms/template/annotation/EmailAnnotation.java, src/main/java/carms/template/validator/EmailValidator.java, src/main/java/carms/template/annotation/PasswordAnnotation.java, src/main/java/carms/template/validator/PasswordValidator.java, src/main/java/carms/template/service/implementation/UserServiceImpl.java, src/main/java/carms/template/exceptions/RestExceptionHandler.java, src/main/java/carms/template/exceptions/AlreadyExistsException.java, src/main/java/carms/template/service/UserService.java, src/main/java/carms/template/service/TemplateService.java, src/main/java/carms/template/service/implementation/TemplateServiceImpl.java, src/main/java/carms/template/entity/User.java, src/main/java/carms/template/service/implementation/UserDetailsServiceImpl.java, src/main/java/carms/template/configuration/SecurityConfig.java, src/main/java/carms/template/service/UserDetailsService.java