Refine fold setting

Current fold setting has a toggle button which can enable the “Stay unlocked on fold” setting.
Create a new page for fold setting which will allow us to choose something from three options.(https://screenshot.googleplex.com/6W65aTYtigGpr3v)
 *Always - Front display turns on when you fold your device [Currently available setting]
 *Only games, videos, and more - Front display turns on for apps that stop your screen going idle [Default]
 *Never - Front display locks when you fold your device [New option for user]

Test: atest FoldLockBehaviorSettingsTest FoldLockBehaviorPreferenceControllerTest
*Manual
  Flash the build with these changes
  Manually select options one by one
  Observe the behavior

Fixes: 294194379
Change-Id: If2984019e21749a6b5c641e88495f5bd637399ee