feat: write plutus data v1 for permissioned candidates and registrations

[LGLO]

Description

• Change of v1 format for permissioned candidates - it's not too late, because nothing was writing it yet
• Implemented logic for writing: if keys are AURA and Grandpa only, then use v0, but if keys are different, then use v1

Checklist

• Commit sequence broadly makes sense and commits have useful messages.
• The size limit of 400 LOC isn't needlessly exceeded
• The PR refers to a JIRA ticket (if one exists)
• New tests are added if needed and existing tests are updated.
• New code is documented and existing documentation is updated.
• Relevant logging and metrics added
• Any changes are noted in the changelog.md for affected crate
• Self-reviewed the diff