Introducing haptic components to the brightness slider.

The components come in the form of a slider state tracker, a slider
event producer, and a slider state listener with concrete
implementations for the purpose of haptic feedback based on the slider
progress and velocity. The components are incorporated as a bundle
inside a BrightnessSliderHaptic plugin added to the
BrightnessSliderController. The new feature is protected by a flag.

Test: atest BrightnessSliderHapticPluginImplTest
Test: atest BrightnessSlidercontrollerTest
Bug: 295932558
(cherry picked from https://googleplex-android-review.googlesource.com/q/commit:9f288982db8e863b49c6d249c168202516874a2f)

Change-Id: I52b954b8a108a66feee524e152bcc1f882669dd0