Allow users to change this settings when the phone is in silent mode, if
they prefer to make all interactions as silent as possible in that
context.
Fix: 165478128
Test: [Alarm|HapticFeedback|Media]Vibration[Intensity|Toggle]PreferenceControllerTest
Change-Id: I68f90559b2bf8088f22397412c149e2a4b91cf13
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
