Create sandbox from input stream

[gt3]

fetch('./super.tar')
.then(response => response.body)
.then(body => body.pipeThrough(unpack).pipeTo(createSandbox))

This removes the overhead of writing to file system, by streaming in memory. It also adds flexibility to the API and performance gains.

Thanks for the excellent work @CompuIves and team. Kindly share your thoughts.

[CompuIves]

I really like this idea! Much better than downloading untarring etc.

[gt3]

Alright, I'll try to cook something up by this weekend. It's mostly changing the contracts and the control flow of the existing methods to work with streams. Thanks for the input @CompuIves .