🎩 What? Why?

This PR allows a trustee to generate election keys for an election he/she is a trustee for. During the key ceremony process, the trustee has to download their backup keys. When all trustees completed that step, the process continues. If one trustee leaves the page after generating the backup keys, he/she has to restore the keys to continue the process.

📌 Related Issues

• Fixes Create Elections keys for an Election #6363

Testing

GENERATING ELECTION KEYS

1. As an admin, create two new trustees (admin@example.org and user@example.org) and set up an election with these two trustees.
2. Go to the trustee zone for trustee 1 (Admin). You should find the election and the link Action required. Following this link, you enter the key ceremony page. Click the Start button and download theBackup keys.
3. Go to the trustee zone for the 2nd trustee and repeat the steps above. You should see a success notification with the new election bulletin board status: ready.
4. Click the Back button.
5. You should see an updated list of elections, showing the new bb_status. The link Action required is no longer available. Instead, you should see No.

GENERATING ELECTION KEYS WITH RESTORING BACKUP KEYS

1. As an admin, create two new trustees (admin@example.org and user@example.org) and set up an election with these two trustees.
2. Go to the trustee zone for trustee 1 (Admin). You should find the election and the link Action required. Following this link, you enter the key ceremony page. Click the Start button and download theBackup keys.
3. Leave the page, e.g. go back to the trustee zone election overview (previous page).
4. Click Action required again.
5. Click Start*.
6. Upload your Backup keys.
7. Go to the trustee zone for the 2nd trustee and repeat the steps above. You should see a success notification with the new election bulletin board status: ready.
8. Click the Back button.
9. You should see an updated list of elections, showing the new bb_status. The link Action required is no longer available. Instead, you should see No.

CHECKING GRAPHQL
As soon as the key ceremony is done, you can open GraphiQl (Bulletin board) and run the following query, where uniqueId is equal to your Decidim Authority (parameterized), followed by a dot and the id of the election.

query {
    election(uniqueId: "decidim-test-authority.13") {
    logEntries {
      messageId
      client {
        name
      }
      chainedHash
    }
  }
}

📋 Checklist

🚨 Please review the guidelines for contributing to this repository.

• ❓ CONSIDER adding a unit test if your PR resolves an issue.
• ✔️ DO check open PR's to avoid duplicates.
• ✔️ DO keep pull requests small so they can be easily reviewed.
• ✔️ DO build locally before pushing.
• ✔️ DO make sure tests pass.
• ✔️ DO make sure any new changes are documented in docs/.
• ✔️ DO add and modify seeds if necessary.
• ✔️ DO add CHANGELOG upgrade notes if required.
• ✔️ DO add to GraphQL API if there are new public fields.
• ✔️ DO add link to MetaDecidim if it's a new feature.
• ❌AVOID breaking the continuous integration build.
• ❌AVOID making significant changes to the overall architecture.

📷 Screenshots

Please add screenshots of the changes you're proposing
Trustee zone with Elections

Key Ceremony - Generate election keys

Key Ceremony - Backup election keys

Key Ceremony - Restore election keys

Key Ceremony - Success

♥️ Thank you!