Split configuration support

[meme]

I'm fuzzy on the intricate details, but on some apps the natives are not supplied in the actual base.apk, but rather in split configs, like the following (for x86): split_config.x86.apk, etc. as well as ones for hidpi.

It'd be nice if Google-Play-API supported these and allowed you to select certain ones (or just download them all).

This issue seems to be relevant: yeriomin/play-store-api#30.

I'm willing to take on this issue in the event no-one else can, but not at the moment.

[jpstotz]

The Java based APK downloader "Raccoon4" (also Apache license) has split download support: https://github.com/onyxbits/raccoon4

There you can see how it works.