feat(est): compare design change cost items

tools/est-test/native-forms.js

@@ -1,6 +1,11 @@
 const EstForms = (() => {
   const common = ["Code", "Name", "Size", "Unite"];
   function data(id, project, state = {}) {
+    if (id === "change-costs")
+      return {
+        columns: ["Gubun", "Name", "originalCost", "changedCost", "difference"],
+        rows: EstBusiness.costChanges(project),
+      };
     if (id === "annual-summary") {
       const output = EstBusiness.annual(project, false);
       return {
@@ -282,6 +287,8 @@ const EstForms = (() => {
     TotalCost: "누계 금액",
     adjustedCost: "조정 금액",
     excludedCost: "제외 금액",
+    originalCost: "당초 금액",
+    changedCost: "변경 금액",
     TargetCode: "연결 내역",
     TU: "단가",
     TC: "금액",