Introduce AnimatorDurationScalePreferenceCtrl

- Create new AnimatorDurationScalePreferenceController
 - Create controller inside the DashboardFragment
 - Port logic from DevelopmentSettings into the controller

Bug: 34203528
Test: make RunSettingsRoboTests -j40
Change-Id: I38820337184916f5d174814721ff61fd14ae9055

src/com/android/settings/development/DevelopmentSettingsDashboardFragment.java

@@ -298,7 +298,7 @@ public class DevelopmentSettingsDashboardFragment extends RestrictedDashboardFra
         controllers.add(new RtlLayoutPreferenceController(context));
         // window animation scale
         // transition animation scale
-        // animator duration scale
+        controllers.add(new AnimatorDurationScalePreferenceController(context));
         // simulate secondary displays
         // smallest width
         controllers.add(new ForceGpuRenderingPreferenceController(context));