[Media] Color extraction.

The interactor implementation provides the color scheme by providing an
updated MediaColorScheme each time new colors are updated.

The composable hierarchy takes that new value and supplies it through it
hierarchy through an instance of AnimatedColorScheme that animated to
the new colors each time they need to change.

Bug: 397989775
Test: verified in the compose gallery app
Flag: EXEMPT code remains unused
Change-Id: I940a95b5605e1f9ef066058c84294a335ad297d4