Add Beyond Identity passwordless (passkey) Auth Provider

[turnipdabeets]

What kind of change does this PR introduce?

This adds a new Auth Provider, Beyond Identity, with first class passkey support.

• supports: https://github.com/orgs/supabase/discussions/8677

What is the current behavior?

No support for Beyond Identity OAuth

What is the new behavior?

Support for Beyond Identity using OAuth

Related PRs

• Add Beyond Identity passwordless (passkey) Auth Provider auth-js#750
• Add Beyond Identity passwordless (passkey) Auth Provider supabase#16206

[kangmingtay]

Hi @turnipdabeets, apologies for the late reply, the team has been pretty busy recently with other priorities. We intend to support the addition of new oauth providers via webhooks or a generalised method. Currently, we only accept new oauth provider contributions on a case-by-case basis based on the demand for it / bandwidth of the team to support it.

Given that this provides an option for someone to use passkeys with Supabase Auth, I'll bring this up with the team internally first.

[kangmingtay]

@turnipdabeets i've brought this up with the team and unfortunately, we won't be adding BeyondIdentity as an OAuth provider right now.

We plan to support any future oauth providers via an extension through a webhook rather than add them natively to gotrue - this helps us to keep the image size small and not bloat the code base.

We also want to be able to support passkeys natively instead of routing this through an oauth provider as it will allow us to support this better - if there's an issue with the authentication process, it will be challenging for the auth team to investigate the issue & coordinate with the folks at BeyondIdentity.