feat(member): implement points mall backend module

src/Application/TakeoutSaaS.Application/App/Members/PointsMall/Dto/MemberPointMallRuleStatsDto.cs

@@ -0,0 +1,27 @@
+namespace TakeoutSaaS.Application.App.Members.PointsMall.Dto;
+
+/// <summary>
+/// 积分规则页统计数据。
+/// </summary>
+public sealed class MemberPointMallRuleStatsDto
+{
+    /// <summary>
+    /// 累计发放积分。
+    /// </summary>
+    public int TotalIssuedPoints { get; set; }
+
+    /// <summary>
+    /// 已兑换积分。
+    /// </summary>
+    public int RedeemedPoints { get; set; }
+
+    /// <summary>
+    /// 积分用户。
+    /// </summary>
+    public int PointMembers { get; set; }
+
+    /// <summary>
+    /// 兑换率（0-100）。
+    /// </summary>
+    public decimal RedeemRate { get; set; }
+}