Add user name photo dialog to user creation

- Remove unused method switchTo
- Move edit user controllers from settings module
- Create new activity for new user creation
- Add ActivityStarter for delegating activity starting
- Add UserCreator for user creation logic
- Add UserCreatingDialog to display while user is creating

Test: manual test && atest EditUserInfoControllerTest
Doc: http://shortn/_cJE9o6pBZR
Screenrecords: http://shortn/_VEN6rr5ta6
Bug: 147653252
Change-Id: I6a7f1dba499e95891c69569ab731f86e6fd1dc16