feat(member): implement points mall backend module

src/Domain/TakeoutSaaS.Domain/Membership/Enums/MemberPointMallNotifyChannel.cs

@@ -0,0 +1,17 @@
+namespace TakeoutSaaS.Domain.Membership.Enums;
+
+/// <summary>
+/// 到账通知渠道。
+/// </summary>
+public enum MemberPointMallNotifyChannel
+{
+    /// <summary>
+    /// 站内消息。
+    /// </summary>
+    InApp = 0,
+
+    /// <summary>
+    /// 短信通知。
+    /// </summary>
+    Sms = 1
+}