Implemented adding a new favorites contact flow NUI.

This change consists of mainly 3 things:
 - Update contacts fragment to meet AddFavoriteActivity requirements
 - Implement AddFavoriteActivity
 - Passing the contact back to SpeedDialFragment

Bug: 36841782
Test: SpeedDialIntegrationTest
PiperOrigin-RevId: 178461265
Change-Id: Ib3a13eae311acf6ce10a94df4f2c95b9af120cff