chore: demo page for system/department (#5611)

* feat: department management demo

* perf: department page improve

* feat: demo api middleware

* fix: add losing import

playground/src/locales/langs/en-US/system.json

@@ -0,0 +1,13 @@
+{
+  "title": "System Management",
+  "dept": {
+    "name": "Department",
+    "title": "Department Management",
+    "deptName": "Department Name",
+    "status": "Status",
+    "createTime": "Create Time",
+    "remark": "Remark",
+    "operation": "Operation",
+    "parentDept": "Parent Department"
+  }
+}

playground/src/locales/langs/zh-CN/system.json

@@ -0,0 +1,13 @@
+{
+  "dept": {
+    "createTime": "创建时间",
+    "deptName": "部门名称",
+    "name": "部门",
+    "operation": "操作",
+    "parentDept": "上级部门",
+    "remark": "备注",
+    "status": "状态",
+    "title": "部门管理"
+  },
+  "title": "系统管理"
+}