Prototype `Cardano transaction`

[jpraynaud]

Content

This PR includes some experimental optimizations of the Cardano transactions proof generation in order to enhance the throughput.

Pre-submit checklist

• Branch
  • [ ] Tests are provided (if possible)
  • [ ] Crates versions are updated (if relevant)
  • [ ] CHANGELOG file is updated (if relevant)
  • [ ] Commit sequence broadly makes sense
  • [ ] Key commits have useful messages
• PR
  • [ ] No clippy warnings in the CI
  • [ ] Self-reviewed the diff
  • [ ] Useful pull request description
  • [ ] Reviewer requested
• Documentation
  • [ ] Update README file (if relevant)
  • [ ] Update documentation website (if relevant)
  • [ ] Add dev blog post (if relevant)

Comments

:warning: This PR should not be merged as it is intended for experimentation only

Issue(s)

Relates to #1687