Add ArtModuleServiceManager.

This is to replace ServiceManager, which the ART module is currently
using to get the "artd" service.

Only the ART mainline module will be able to access an instance of this
class.

Bug: 233915142
Test: Presubmit
Change-Id: I94953bc7fbf471e142b1ab375fe1624bebd2a4ea
3 files changed