Allow running humanify against one or more source files that have already been unpacked (eg. skip re-running through webcrack)

[0xdevalias]

@jehna It might be a neat/useful feature to be able to run humanify against a source file (or multiple files/directory of files/etc) while bypassing the webcrack step; that way it could be used on files that had already been unpacked/etc with webcrack (or another tool like wakaru) previously.

Originally posted by @0xdevalias in https://github.com/jehna/humanify/issues/111#issuecomment-2376061750