Allow list of auth entries in credMan Provider API

In the cuurent API design, providers can either create a response with
an authEntry (if app locked) or w. a CredentialResponseContent
(containing actual entries). Based on feedback, we need to allow for
multiple auth entries & credential entries at the same time a given
provider can have multiple accounts which can be locked/unlcoked
separately.

Test: Built & deployed locally

Bug: 266637921
API-Coverage-Bug: 247549381

Change-Id: I84c64eb588507c583bbd53158641445f2ccb41d7