feat: add AUTH_WEBAUTHN_RP_ID environment variable

[onehassan]

Checklist

• [X] No breaking changes
• [X] Tests pass
• [X] New features have new tests
• [X] Documentation is updated

[changeset-bot[bot]]

🦋 Changeset detected

Latest commit: 800f52fe49efc5b3d7209e1a7e6fb7288210f510

The changes in this PR will be included in the next version bump.

This PR includes changesets to release 1 package

| Name | Type | | ----------- | ----- | | hasura-auth | Minor |

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