edit variable definition

sample/vars/declare-vars.json

@@ -0,0 +1,25 @@
+{
+  "name": "declare-vars",
+  "desc": "",
+  "firstid": 1,
+  "export": true,
+  "declare": {
+    "imports": [
+      "vars/declare-core.json"
+    ],
+    "vars": [
+      {
+        "name": "owner",
+        "desc": "所有者"
+      },
+      {
+        "name": "skill",
+        "desc": "技能"
+      }
+    ]
+  },
+  "root": {
+    "id": 1,
+    "name": "Sequence"
+  }
+}