CTS Verifier test for car launcher displaying car-service-disabled apps

- Added a CTS Verifier test to verify the car launcher implementation
displays apps disabled by car service because of system resource
overuse.
- To build the companion app run `m CtsCarWatchdogCompanionApp` and
  install on device.

Test: m CtsVerifier; m CtsCarWatchdogCompanionApp
Bug: 215742912
Merged-In: Ic2eebfdb8e2c4453b2d14e86c08961ea7aa783c3
(cherry-pick from commit a2244748aba2442840947091ec3ec6516c632be1)

Change-Id: Ic2eebfdb8e2c4453b2d14e86c08961ea7aa783c3