* Feat(offline-download): allow using thunder offline download tool in any storage
* Feat(offline-download): allow using 115 offline download tool in any storage
* Feat(offline-download): allow using pikpak offline download tool in any storage
* style(offline-download): unify offline download tool names
* feat(offline-download): show available offline download tools only
* Fix(offline-download): update unmodified tool names.
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Co-authored-by: Andy Hsu <i@nn.ci>
* add pikpak offline download function
* 完善PikPak离线下载功能
* 删除多余的代码
* add task cache to avoid too many requests about API
* 优化Status函数
* 完善所有功能,目前测试无BUG
* 减少缓存时间，优化添加离线任务的参数
