Add user name photo dialog to user creation in SysUI

- Move user creation dialog related resources to SettingsLib
- Change dialog showing logic in UserSettings because
   EditUserInfoController contracts have changed.
- Show UserCreatingDialog when user is being created
- Fix crash when phone is rotated during user creation

Test: manual test
Doc: http://shortn/_cJE9o6pBZR
Screenrecord: http://shortn/_Jy5Q0lTAUL
Bug: 147653252
Change-Id: I15e15ad88b768a5b679de32c5429d921d850a3cb