Introduce alarm and media vibration intensity settings

Introduce toggles and sliders to configure the alarm and media
vibrations in the "Vibration & haptics" settings app.

Also update the multiple intensities configuration flag into a integer,
where the device can specify how many distinct levels are supported.
Follow existing implementation to map the intensities to higher setting
values.

Bug: 198346559
Bug: 207477604
Test: [Alarm|Media]Vibration[Intensity|Toggle]PreferenceControllerTest
Change-Id: Ie3d570b72ba1229e613ecf0c45fac81233529e32

src/com/android/settings/accessibility/NotificationVibrationIntensityPreferenceController.java

@@ -39,6 +39,12 @@ public class NotificationVibrationIntensityPreferenceController
         super(context, preferenceKey, new NotificationVibrationPreferenceConfig(context));
     }
 
+    protected NotificationVibrationIntensityPreferenceController(Context context,
+            String preferenceKey, int supportedIntensityLevels) {
+        super(context, preferenceKey, new NotificationVibrationPreferenceConfig(context),
+                supportedIntensityLevels);
+    }
+
     @Override
     public int getAvailabilityStatus() {
         return AVAILABLE;