feat: 新增RBAC角色模板复制与初始化

src/Application/TakeoutSaaS.Application/Identity/Queries/ListRoleTemplatesQuery.cs

@@ -0,0 +1,10 @@
+using System.Collections.Generic;
+using MediatR;
+using TakeoutSaaS.Application.Identity.Contracts;
+
+namespace TakeoutSaaS.Application.Identity.Queries;
+
+/// <summary>
+/// 查询角色模板列表。
+/// </summary>
+public sealed record ListRoleTemplatesQuery : IRequest<IReadOnlyList<RoleTemplateDto>>;