feat: 添加用户统计功能，包括统计接口和相关数据结构

backend/app/http/super/routes.gen.go

@@ -74,6 +74,10 @@ func (r *Routes) Register(router fiber.Router) {
 		r.user.list,
 		Query[dto.UserPageFilter]("filter"),
 	))
+	r.log.Debugf("Registering route: Get /super/v1/users/statistics -> user.statistics")
+	router.Get("/super/v1/users/statistics", DataFunc0(
+		r.user.statistics,
+	))
 	r.log.Debugf("Registering route: Get /super/v1/users/statuses -> user.statusList")
 	router.Get("/super/v1/users/statuses", DataFunc0(
 		r.user.statusList,