Adds the LightRevealScrim, and the 'lift' reveal effect.

This effect will be used for all AOD/Lockscreen transitions - a subsequent CL is adding additional effects (like power button/AOD tap) and also using this effect for Unlocked -> AOD/Locked.

Test: manual
Bug: 169693662
Change-Id: I4546b96a29cabd14fc317478f33d8ee4db040eeb