[오픈소스 컨트리뷰트 Github api] 깃허브 api 버그 수정

Describe the bug In the enum GHCommentAuthorAssociation there can come another value that can not be parsed: MANNEQUIN Also see: https://docs.github.com/en/graphql/reference/enums#commentauthorasso...

To improve the project documentation, we need to cover all packages with Javadoc comments. config entity exception repository service util