feat: 归档L03与L09审批发布能力

- 新增统一审批中心与审批管理页面，支持流程配置、审批详情与角色/用户审批对象

- 接入聊天助手、知识库、工作流的发布与删除审批，并补齐发布态校验与快照展示

easyflow-ui-admin/app/src/locales/langs/en-US/menus.json

@@ -13,6 +13,11 @@
     "sysJob": "Job",
     "sysLog": "Log",
     "sysFeedback": "UserFeedback",
+    "approval": "Approval",
+    "approvalFlow": "Flow Setup",
+    "approvalPending": "Pending",
+    "approvalProcessed": "Processed",
+    "approvalInitiated": "Initiated",
     "sysAppearance": "Appearance",
     "oauth": "OAuth"
   },