ui: add complex descriptors selection in problem search (#636)

Co-authored-by: undefined <i@undefined.moe>
Co-authored-by: panda <panda_dtdyy@outlook.com>

packages/hydrooj/locales/zh.yaml

@@ -518,8 +518,8 @@ Numeric PID: 数字题号
 Oh, the user doesn't have any contributions!: 啊哦，这个用户还没贡献过题目~
 Oh, the user hasn't created any discussions yet!: 这个用户还没有发布过讨论
 Oh, the user hasn't submitted yet!: 这个用户还没有交过题 _(:зゝ∠)_
-Oh, there is no task in the queue!: 喔，队列中目前没有任务。
 Oh, there are no tasks that match the filter!: 喔，目前没有符合过滤条件的任务。
+Oh, there is no task in the queue!: 喔，队列中目前没有任务。
 Ok: 确定
 Only A-Z, a-z, 0-9 and _ are accepted: 只接受 A-Z, a-z, 0-9 和 _
 Oops, there are no results.: 呀，没有结果。
@@ -582,6 +582,7 @@ Preview: 预览
 Privacy: 隐私
 Problem {1} not found.: 题目 {1} 不存在。
 Problem Categories: 题目标签
+Problem Category: 标签
 Problem Data: 题目数据
 Problem Description: 题目描述
 Problem ID List: 题目 ID 列表
@@ -684,7 +685,9 @@ Section: 章节
 Security: 安全
 Select a node to create discussion.: 选择一个节点来发表讨论。
 Select a role: 选择一个角色
+Select Category: 选择标签
 Select User: 选择用户
+Selected categories: 已选标签
 Selected roles have been deleted.: 所选角色已删除。
 Selected users have been removed from the domain.: 所选用户已从此域中移除。
 Send Code after acceptance: 通过题目后发送源代码