refactor: add newlines to improve readability

advertisements/src/app.ts

carts/src/controllers/carts.controller.ts

carts/src/routes/carts.router.ts

carts/src/server.ts

orders/src/controllers/addresses.controller.ts

orders/src/controllers/orders.controller.ts

orders/src/controllers/payments.controller.ts

products/src/controllers/products.controller.ts

products/src/routes/products.router.ts

recommendations/src/app.ts

recommendations/src/routes/recommendations.router.ts

recommendations/src/server.ts

user-logs/src/server.ts

users/src/app.ts

users/src/auth/auth.ts

users/src/models/admin.ts

users/src/models/customer.ts

users/src/server.ts