Add support for certificates to register and delegate stake simultaneously

[CarlosLopezDeLara]

Changelog

- description: |
    Implement cddl's `stake_reg_deleg_cert` and `vote_reg_deleg_cert` and `stake_vote_reg_deleg_cert` as: 
    - cardano-cli conway stake-address registration-and-delegation-certificate 
    - cardano-cli conway stake-address registration-and-vote-delegation-certificate 
    - cardano-cli conway stake-address registration-stake-and-vote-delegation-certificate
    
# uncomment types applicable to the change:
  type:
   - feature        # introduces a new feature
  # - breaking       # the API has changed in a breaking way
  # - compatible     # the API has changed but is non-breaking
  # - optimisation   # measurable performance improvements
  # - refactoring    # QoL changes
  # - bugfix         # fixes a defect
  # - test           # fixes/modifies tests
  # - maintenance    # not directly related to the code
  # - release        # related to a new release preparation
  # - documentation  # change in code docs, haddocks...

Context

Resolves #909

The Conway CDDL includes this certificate. It was not a priority during the initial Conway implementation because one can achieve the same result with a combination of the other certificates.

How to trust this PR

• Tests are included on the PR
• Parsing the resulting CBOR through diagnostics in cbor.me shows

[11, [0, h'EF1785CF18928F8353C90E76B7A8FC60855472D31A0EA1C1C774AB01'], h'C27CF021914A2B3BCB286D3D741979083422378C577FE757702B6988', 2000000]

which matches the expected certificate from the cddl:

stake_reg_deleg_cert = (11, stake_credential, pool_keyhash, coin)

The same with:

[12, [0, h'EF1785CF18928F8353C90E76B7A8FC60855472D31A0EA1C1C774AB01'], [0, h'E68F9EE70599CB93D9F60678F9C6463C01938C27D9820C7BF93887A5'], 2000000]

vote_reg_deleg_cert = (12, stake_credential, drep, coin)

and for

[13, [0, h'EF1785CF18928F8353C90E76B7A8FC60855472D31A0EA1C1C774AB01'], h'E22C026479D8CEB9CDA4FC344F550F3ACC19955AFE4670EE9F0EE0B8', [3], 2000000]

stake_vote_reg_deleg_cert = (13, stake_credential, pool_keyhash, drep, coin)

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

[smelc]

Great job 👏