[DO NOT MERGE] SDKS-2474_WebAuthn_Keys_With_Passkeys

[george-bafaloukas-forgerock]

Making the "selectCredentialsFromSources" and adding logic to check for existing WebAuthn keys before going for Passkeys on iOS16 + UX WIP

JIRA Ticket

Please, link jira ticket here.

Description

Briefly describe the change and any information that would help speedup the review and testing process.

Definition of Done Checklist:

• Acceptance criteria is met.
• All tasks listed in the user story have been completed.
• Coded to standards.
• Ensure backward compatibility.
• API reference docs is updated.
• Unit tests are written.
• Integration tests are written.
• e2e tests are written.
• Functional spec is written/updated.
• Example code snippets have been added.
• Change log updated.
• Documentation story is created and tracked.
• Tech debts and remaining tasks are tracked in separated ticket(s).