Support for --extractall option

[r-a-y]

Hi, came across your project and it looks very useful!

However, what if we have an asset that is an archive and we wanted to extract all the files from the asset to a destination directory? Currently, the --extract command is only useful for one file from the archive, so another option like --extractall would be useful.

For a more, advanced option, perhaps there could be a --extract-but-omit <files-and-directories-comma-delimited>, which would extract all the files, but omit certain ones based on the argument.

Thanks for considering!

[jooola]

This definitely crossed my mind while creating this tool. I was thinking to allow glob patterns in the --extract flag, and to allow multiple --extract flags.

Needs some experimenting.