Refactor animations in QSTileViewImpl

Now the color animations in the tile (minus the icon) happen all in a
single animator. That way, they are all in sync and we don't have race
conditions if two states are pushed really fast.

Test: manual
Test: atest com.android.systemui.qs
Fixes: 187459434
Change-Id: I1987b13c31c8ce695aa3199e41262a8f4ab80ab0