custom card background image

src/middlewares/files/card/cardImageStorage.ts

src/middlewares/files/card/getCardImage.ts

src/middlewares/files/card/getUserCard.ts

src/middlewares/files/card/responseCardImage.ts

src/middlewares/files/card/uploadCardImage.ts

src/middlewares/user/getUser.ts

src/models/CardImageSchema.ts

src/routes/file.ts

src/routes/user.ts

src/utils/declarations/response.d.ts