feat: Most of Item and Order controllers

api/dto/order_item_price_response.go

@@ -0,0 +1,14 @@
+package dto
+
+import "time"
+
+type OrderItemPriceResponse struct {
+	ItemId     int
+	OrderId    int
+	ItemName   string
+	Quantity   int
+	Made       int
+	CreatedAt  time.Time
+	TotalPrice float64
+	UnitPrice  float64
+}