✨ (signer-aleo): Add initial aleo signer files using the generator

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📝 Description

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❓ Context

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✅ Checklist

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• Covered by automatic tests
• Changeset is provided
• Documentation is up-to-date
• Impact of the changes:
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🧐 Checklist for the PR Reviewers

• The code aligns with the requirements described in the linked JIRA or GitHub issue.
• The PR description clearly documents the changes made and explains any technical trade-offs or design decisions.
• There are no undocumented trade-offs, technical debt, or maintainability issues.
• The PR has been tested thoroughly, and any potential edge cases have been considered and handled.
• Any new dependencies have been justified and documented.

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