IAM Providers: Custom Login UI

Developers can choose to not use Arcana's plug-and-play login UI for third-party IAM providers and instead build a custom login UI to onboard users.

In this case, developers must build the custom login UI themselves after configuring the IAM providers in the Arcana Developer Dashboard. This custom login UI must call appropriate user onboarding functions offered by the Arcana Auth SDK for the third-party IAM providers.