Allow to process all files in a directory

[aruku]

First, let me thank you for this tool, it is awesome and it is helping us!

Could it be possible to have it go over all the *.map files in a directory and unpack all of them?
Our build outputs a bunch of bundles and chunks.

Thank you!

[aruku]

Also, it complains if the target directory already exists, so I have to give it different output directories even though it is unpacking the same source.

[pavloko]

Do I understand correctly that the structure can be as the following?

/folder-with-maps
     chunk1.js
     chunk1.map
     chunk2.js
     chunk2.map
     chunk3.js
     chunk3.map

and we'd want to do the following

unpack folder-with-unpacked-maps folder-with-maps

Could you provide an example map of the format to experiment with?