chore: delete message i18n

public/locales/en/chat.json

@@ -30,5 +30,10 @@
 
   "send_to": "Send To",
   "edited": "edited",
-  "license_tip": "Your license has reached the limit, upgrade the License or contact the Admin!"
+  "license_tip": "Your license has reached the limit, upgrade the License or contact the Admin!",
+
+  "delete_msg_title": "Delete Message",
+  "delete_msg_desc": "Are you sure want to delete {{msg}}?",
+  "delete_msg_this": "this message",
+  "delete_msg_these": "these messages"
 }

public/locales/zh/chat.json

@@ -31,5 +31,10 @@
 
   "send_to": "发送至",
   "edited": "已编辑",
-  "license_tip": "您的使用人数已达证书限制上限，请升级证书或者联系管理员！"
+  "license_tip": "您的使用人数已达证书限制上限，请升级证书或者联系管理员！",
+
+  "delete_msg_title": "删除消息",
+  "delete_msg_desc": "确定删除{{msg}}？",
+  "delete_msg_this": "此消息",
+  "delete_msg_these": "这些消息"
 }