XiaoKui

希望支持配置response headers解决跨域问题

2

```ts if (isFunction(rawResponse)) { await rawResponse.bind(self)(req, res); } else { const body = await parseJson(req); res.setHeader("Content-Type", "application/json"); res.statusCode = statusCode || 200; const mockResponse = isFunction(response) ? response.bind(self)({url: req.url, body,...