Support downloading files from the filer by dragging and dropping

[SmartElec]

貌似仅支持拖拽上传，不支持拖拽下载。

[kingToolbox]

Sorry for the late reply.

Yes, downloading by dragging and dropping requires dealing with the system, such as Windows Shell. Since WindTerm is cross-platform, it needs to be implemented system by system. I will provide this feature in subsequent releases, please stay tuned, thank you.

[wangkerong]

强烈支持该功能