ScrapydArt base on Scrapyd, and added auth/filter/order…… and added new API

ScrapydArt在Scrapyd基础上新增了权限验证、筛选过滤、排序、数据统计以及排行榜等功能，并且有了更强大的API。

ScrapydArt is a service for running Scrapy spiders.

It allows you to deploy your Scrapy projects and control their spiders using an HTTP JSON API.

The documentation (including installation and usage) can be found at(官方文档在此): https://scrapydart.readthedocs.io/zh/latest/