对重要列表id进行，从1-n依次排列，删除后依然占用序号;

app/Models/Enums/DisplayIndexObjectType.php

@@ -0,0 +1,36 @@
+<?php
+
+namespace App\Models\Enums;
+
+use App\Models\Action;
+use App\Models\Asset;
+use App\Models\Company;
+use App\Models\Container;
+use App\Models\Plan;
+use App\Models\Project;
+use App\Models\Requirement;
+use App\Models\Task;
+
+enum DisplayIndexObjectType : string
+{
+    case ASSET = "asset";
+
+    case ASSETGROUP="assetGroup";
+
+    case PROJECT = "project";
+
+    case REQUIREMENT = "requirement";
+
+    case REQUIREMENTGROUP = "requirementGroup";
+
+    case TASK = "task";
+
+    case PLAN = "plan";
+
+    case DEPARTMENT = "department";
+
+    case APPROVALFLOW= "approvalFlow";
+
+    case NAMERULE="nameRule";
+
+}