Add slider input events interactor.

This interactor provides touches and button presses that affect the
Slider of the corresponding `@VolumeDialogSliderScope`

Flag: com.android.systemui.volume_redesign
Test: manual on foldable
Test: atest VolumeDialogSliderInputEventsInteractorTest
Bug: 369995895
Change-Id: Ia4339b8d1f0f1a470a07a3b541355d8ddfab6b55