feat: 添加 nCode 组件及相关 API，支持创建、查询、更新和删除操作

test/get-list.ts

@@ -0,0 +1,19 @@
+import { client, api } from '../src/convex.ts'
+
+
+// client.query(api.nCode.getList, {}).then((res) => {
+//   console.log('getList', res)
+// })
+
+const createNCode = async () => {
+  const res = await client.mutation(api.nCode.create, {
+    code: Math.random().toString(36).substring(2, 8),
+    type: "link",
+    data: {},
+    title: "测试码",
+    description: "这是一个测试码",
+    userId: "test-user-id",
+  })
+  console.log('createNCode', res)
+}
+createNCode()