* 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(BaseRequestValidator):
Add global setting for new device verification.
Refactor BaseRequestValidator enabling better self-documenting code and better single responsibility principle for validators.
Updated DeviceValidator to handle new device verification, behind a feature flag.
Moved IDeviceValidator interface to separate file.
Updated CustomRequestValidator to act as the conduit by which *Validators communicate authentication context between themselves and the RequestValidators.
Adding new test for DeviceValidator class.
Updated tests for BaseRequestValidator as some functionality was moved to the DeviceValidator class.
