Adding support for determining split layout for launcher.

> Simulating the windo wmanager API to get available device
  profiles until final API
> When a device has multiple internal displays, and with both
  tablet and phone possibilities, it uses a split workspace layout

Bug: 186160341
Bug: 175782275
Test: Manual
Change-Id: Ieff2329acac7cdd6b9abe6f96cd459cd45bd0efe