(feat#3745): display authors for Live Voting Governance Actions

[Ciabas]

List of changes

• Add authors for Live Voting Governance Actions

Checklist

• related issue
• My changes generate no new warnings
• My code follows the style guidelines of this project
• I have commented my code, particularly in hard-to-understand areas
• I have made corresponding changes to the changelog
• I have added tests that prove my fix is effective or that my feature works

Currently not many gov_action_proposal contains any authors.

SELECT
    gov_action_proposal.id,
    off_chain_vote_author.name AS author_name,
    off_chain_vote_author.witness_algorithm,
    off_chain_vote_author.public_key,
    off_chain_vote_author.signature
FROM
    gov_action_proposal
    LEFT JOIN tx AS creator_tx ON creator_tx.id = gov_action_proposal.tx_id
    LEFT JOIN voting_anchor ON voting_anchor.id = gov_action_proposal.voting_anchor_id
    LEFT JOIN off_chain_vote_data ON off_chain_vote_data.voting_anchor_id = voting_anchor.id
    LEFT JOIN off_chain_vote_author ON off_chain_vote_author.off_chain_vote_data_id = off_chain_vote_data.id

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[github-actions]

✅ All checks succeeded

[github-actions]

✅ All checks succeeded

[github-actions]

@Ciabas
This PR is in the tag: develop-34ebe49c9dd8cbe9fdc80e1afc7f0d4a57bb5075 , for govtool-metadata-validation service

[github-actions]

@Ciabas
This PR is in the tag: develop-34ebe49c9dd8cbe9fdc80e1afc7f0d4a57bb5075 , for govtool-backend service

[github-actions]

@Ciabas
This PR is in the tag: develop-34ebe49c9dd8cbe9fdc80e1afc7f0d4a57bb5075 , for govtool-frontend service