Add input option to unpack (or not) downloaded artifact(s)

[daleyjem]

Adds an optional skip_unpack input option (default: false), so that user can bypass unzipping the downloaded artifacts.

Also... While my first instinct is to npm i a Node package, it added quite a bit to node_modules and package-lock.json, so I reverted that to keep the PR small.

[dawidd6]

Can we have this input inverted? For example rename it to skip_unpack, default to false and not use this new function to get boolean value?

[daleyjem]

Can we have this input inverted? For example rename it to skip_unpack, default to false and not use this new function to get boolean value?

Like that?

[daleyjem]

Lemme see if I can get my tests passing now that workflow filtering seems to be working again, and then I'll take it out of draft

[daleyjem]

@dawidd6 Ok... I think it's ready now.

[dawidd6]

Thanks