Migrate ranking components to subpackage.
I still have some old refactoring CLs outstanding around these
components, but for now I just want to group them together (and start
emptying out some of our top-level source directory). Long-term this
subpackage probably merges with some or all of the responsibilities
in the `shortcuts` subpackage (if we imagine that "sourcing" targets
and "scoring/ranking" them are both responsibilities of some backend
"data model").
Test: atest IntentResolverUnitTests
Bug: 202167050
Change-Id: If15bf9b8ac1989bd3ded65e2c4bfa0bc2abc171e
8 files changed