Implement student page

...a/id/ac/ui/cs/advprog/turorial0/Turorial0Application.java

...ui/cs/advprog/turorial0/controller/StudentController.java

...og/turorial0/exception/DuplicateStudentNameException.java

...ain/java/id/ac/ui/cs/advprog/turorial0/model/Student.java

...ui/cs/advprog/turorial0/repository/StudentRepository.java

...id/ac/ui/cs/advprog/turorial0/service/StudentService.java

...c/ui/cs/advprog/turorial0/service/StudentServiceImpl.java

src/main/resources/templates/createStudent.html

src/main/resources/templates/studentList.html