Add option to junk paths on extract

[gitoss]

I'm using minzip as a replacement for the infozip 'unzip' command line - but it's bugging me that there is one option missing I'm using a lot:

"unzip -j" doesn't extract paths, i.e. is a path-specific modifier just like the current "minzip -i".

It would be nice to have such a "junk paths on extract" added to minizip - though I know minizip-ng isn't primarily about command line convenience. Thanks for considering!