Integrate new Consensus queries for 10.3

[jasagredo]

Changelog

- description: |
    Expose new queries `QueryLedgerConfig` and `QueryStakePoolDefaultVote`
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  - feature        # introduces a new feature
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  # - optimisation   # measurable performance improvements
  # - refactoring    # QoL changes
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  # - test           # fixes/modifies tests
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Checklist

• Commit sequence broadly makes sense and commits have useful messages
• New tests are added if needed and existing tests are updated. See Running tests for more details
• Self-reviewed the diff

[Jimbo4350]

LGTM