Removed unnecessary regacy implementation of NewArticleService.
Implemented the GetUserIdAsync method.
Implemented the AddAsync method.
Addressed guard clauses.
Implemented the RemoveAsync method.
Renamed some permission values.
Introduced the AuthArticleService class.
Introduced the InnerService property.
Implemented the GetAsync method.
Implemented the AddAsync method.
Implemented the ModifyAsync method.
Implemented the GetUserIdAsync method.
Implemented the RemoveAsync method.
Fixed typos.
Introduced the IArticleWordRepository interface.
Addressed guard clauses.
Introduced the ArticleWordService class.
Introduced the ArticleWords property.
Implemented the RemoveAsyncCorrectlyRemovesWords method.
Implemented the AddWordsAsync method.