core&ui: add language filter (#346)

packages/ui-default/locales/zh.yaml

@@ -68,6 +68,7 @@ Add: 添加
 All {0} Contests: 所有 {0} 比赛
 All Contests: 所有比赛
 All Homeworks: 所有作业
+All Languages: 所有语言
 All Submissions: 所有递交
 All Training Plans: 所有训练计划
 All: 全部
@@ -100,6 +101,7 @@ Built-in: 内置
 Bulletin: 公告
 By clicking the button, you will become a member of the domain {0}.: 点击按钮，您将成为域 {0} 的成员。
 By Contest: 由比赛
+By Language: 由语言
 By Problem: 由题目
 By signing up a {0} universal account, you can submit code and join discussions in all online judging services provided by us.: 注册一个 {0} 通用账户，您就可以在我们提供的所有在线评测服务上提交代码、参与讨论。
 By Status: 由状态