Add option to download with tags

[ihavenoface]

https://github.com/hydrusnetwork/hydrus offers a way to scrape a given directory for images periodically.
Optionally it can pick up a text file containing the image tags, alongside the image, and import those as well.

ie. if you have an image called myImage.png, you could also put a corresponding text file called myImage.png.txt which holds the image's tags.

I think it would be very convenient to have an option which also stores the tags as described above.

[ahodesuka]

Option's disabled by default.

[ihavenoface]

Thanks!