Add new test module for system service with static / final mocking

And move AppStateTrackerTest for starter.

Bug: 114096820
Bug: 118510622
Test: atest FrameworksMockingServicesTests
Change-Id: Ie5bf44322f29e9971358a706cf44bc5c8a325c30
Merged-In: Ie5bf44322f29e9971358a706cf44bc5c8a325c30
(cherry picked from commit 5f732365c6a33c2115bfd159b8b9729b834c8568)
4 files changed