더미 생성 완료

CLOSED - task 5: Checker 더미 생성 
https://github.com/Graduation-for-Noble-Undergraduates/graduation-condition-checker/issues/issues/issue/5
카탈로그를 받아서 연산을 하고 결과를 리턴하는 더미 생성.

CLOSED - task 10: [Checker] 메서드 생성 
https://github.com/Graduation-for-Noble-Undergraduates/graduation-condition-checker/issues/issues/issue/10
Merge branch 'master' of ssh://git@github.com/Graduation-for-Noble-Undergraduates/graduation-condition-checker.git