cart & checkout: apply validation based on required inputs in each service & add phone input in checkout page

src/pages/checkout/hooks/useOrder.ts

@@ -13,14 +13,14 @@ export default function useOrder() {
   const { mobilenumber, user_uuid } = JSON.parse(
     localStorage.getItem("customer") || "{}"
   ) as Customer;
-  const { items, coupon, tip, tables, specialRequest } =
+  const { items, coupon, tip, tables, specialRequest, phone } =
     useAppSelector(selectCart);
 
   const [createOrder] = useCreateOrderMutation();
 
   const handleCreateOrder = useCallback(() => {
     createOrder({
-      phone: mobilenumber,
+      phone: mobilenumber || phone,
       couponID: coupon,
       discountAmount: 0,
       comment: specialRequest,