refactored user and some API

src/middlewares/auth/isAdmin.ts

src/middlewares/files/updateProfilePicture.ts

src/middlewares/news/getNewsList.ts

src/middlewares/user/acceptPicture.ts

src/middlewares/user/deleteUser.ts

src/middlewares/user/getUser.ts

src/middlewares/user/getUserWarningsList.ts

src/middlewares/user/getUsersList.ts

src/middlewares/user/rejectPicture.ts

src/middlewares/user/setOwnUserId.ts

src/middlewares/user/updateUser.ts

src/middlewares/utils/createdResponse.ts

src/middlewares/utils/getFieldValue.ts

src/middlewares/warning/addWarning.ts

src/middlewares/warning/deleteWarning.ts

src/middlewares/warning/getWarning.ts

src/middlewares/warning/getWarningsList.ts

src/middlewares/warning/updateWarning.ts

src/models/CounterSchema.ts

src/models/NotificationSchema.ts