添加职位分类相关接口：获取职位分类列表；

app/JsonRpc/NewsService.php

@@ -2065,6 +2065,7 @@ class NewsService implements NewsServiceInterface
             $query->whereIn('zwid', $zwids);
         })
         ->where('zwpid', 0)
+        ->orderBy('updated_at', 'desc')
         ->offset(($page - 1) * $page_size)
         ->limit($page_size)->get()
         ->map(function ($item) use ($data) {
@@ -2072,6 +2073,7 @@ class NewsService implements NewsServiceInterface
             ->when(!empty($data['childname']), function ($query) use ($data) {
                 $query->where('zwname', 'like', '%' . $data['childname'] . '%'); 
             })
+            ->orderBy('updated_at', 'desc')
             ->get();
             return $item;
         })