Fix `autotag` so you can pass a filename of '-' to read a file from
stdin. This way you can do this:
docker run --rm -i ghcr.io/danbooru/autotagger autotag - < image.jpg
...to perform prediction on a single file outside of Docker.
* Make it so you can give the `autotag` script a mixed list of files and
directories, and it will recursively process every file in each directory.
* Allow choosing the output format: one (filename, tag, score) tuple per
line, or one (filename, tags) tuple per line.
evazion