* feat : remove old registration endpoint
* fix: update integration test user registration to match current registration; We need to keep the IRegistrationCommand.RegisterUser method to JIT user.
* fix: updating accounts/profile tests to match current implementations
* feat(newDeviceVerification) : Initial update to email
* fix : email copying over extra whitespace when using keyboard short cuts
* test : Fixing tests for new device verificaiton email format
refactor(TwoFactorAuthentication): Remove references to old Duo SDK version 2 code and replace them with the Duo SDK version 4 supported library DuoUniversal code.
Increased unit test coverage in the Two Factor Authentication code space. We opted to use DI instead of Inheritance for the Duo and OrganizaitonDuo two factor tokens to increase testability, since creating a testing mock of the Duo.Client was non-trivial.
Reviewed-by: @JaredSnider-Bitwarden
* PM-3833 - API - AccountsController.cs && AccountsController.cs - remove prelogin and register endpoints.
* PM-3833 - Move Request and Response models that were used for Prelogin and PostRegister from API to Identity.
* PM-3833 - FIX LINT
* PM-3833 - Fix issues after merge conflict fixes.
* PM-3833 - Another test fix
