feat(marketing): add new customer gift backend module

src/Domain/TakeoutSaaS.Domain/Coupons/Enums/NewCustomerInviteOrderStatus.cs

@@ -0,0 +1,17 @@
+namespace TakeoutSaaS.Domain.Coupons.Enums;
+
+/// <summary>
+/// 邀请记录订单状态。
+/// </summary>
+public enum NewCustomerInviteOrderStatus
+{
+    /// <summary>
+    /// 待下单。
+    /// </summary>
+    PendingOrder = 1,
+
+    /// <summary>
+    /// 已下单。
+    /// </summary>
+    Ordered = 2
+}