feat: 实现租户管理及套餐流程

src/Application/TakeoutSaaS.Application/App/Tenants/Commands/ReviewTenantCommand.cs

@@ -0,0 +1,13 @@
+using MediatR;
+using System.ComponentModel.DataAnnotations;
+using TakeoutSaaS.Application.App.Tenants.Dto;
+
+namespace TakeoutSaaS.Application.App.Tenants.Commands;
+
+/// <summary>
+/// 审核租户命令。
+/// </summary>
+public sealed record ReviewTenantCommand(
+    [property: Required] long TenantId,
+    bool Approve,
+    string? Reason) : IRequest<TenantDto>;