添加全局rate_limit，更换ui节点接口

packages/fps-importer/handler.ts

@@ -10,6 +10,7 @@ import {
     Route, Handler, param, Types,
 } from 'hydrooj/dist/service/server';
 import { streamToBuffer } from 'hydrooj/dist/utils';
+import { ProblemAdd } from 'hydrooj/dist/lib/ui';
 import * as file from 'hydrooj/dist/model/file';
 import { PERM } from 'hydrooj/dist/model/builtin';
 
@@ -123,6 +124,7 @@ class FpsProblemImportHandler extends Handler {
 
 export async function apply() {
     Route('problem_import_fps', '/problem/import/fps', FpsProblemImportHandler, PERM.PERM_CREATE_PROBLEM);
+    ProblemAdd('problem_import_fps', {}, 'copy', 'From FPS File');
 }
 
 global.Hydro.handler.fpsImport = apply;