Merge branch 'feat/auth' into 'dev'

src/main/java/com/aolda/itda/controller/AuthController.java

src/main/java/com/aolda/itda/dto/auth/ProjectRoleDTO.java

src/main/java/com/aolda/itda/exception/ErrorCode.java

src/main/java/com/aolda/itda/service/AuthService.java