Allow to use stream as source

[piranna]

Allow to use a stream on .src() so it could allow to use less memory instead of having all the file in memory on a Buffer object.

[bchr02]

+1

[nathan818fr]

Any news about this option?

[sindresorhus]

A good pull request with docs and tests would be welcomed.

[kevva]

Unfortunately, it's going to be a bit tricky since https://github.com/kevva/decompress-unzip doesn't support streams, and probably never will because of https://github.com/thejoshwolfe/yauzl#no-streaming-unzip-api.