Add ShadePositionRepository

Add ShadePositionRespository as source for truth for shade display id. Also added adb command for setting display id and initializign in ShadeControllerImpl

Bug: 374264564
Test: atest ShadePositionRepositoryTest
Test: manual testing
Flag: EXEMPT not needed
Change-Id: I29387adae3984dbca7bb1ac9b6ba8290cdf00718
4 files changed