feat: Lamport (one-time) signature scheme

[Autoparallel]

TODO

This needs to be written out still. The idea is still in flux.

Bounty description

A clear and concise description of the project; should be accessible to a contributor with minimal context.

Implementation requirements

A clear and comprehensive list of the requirements for the bounty to be considered complete.

• Task 1
  • Subtasks (if relevant)
• Task 2
  • Subtasks (if relevant)
• Task 3
  • Subtasks (if relevant)

Bonus features

Any additional features that will enhance the value of the bounty.

• Bonus Feature 1
• Bonus Feature 2

Resources

A list of potentially-useful resources. This list should be less than 5 total resources.

Criteria

For timely submissions of bounties that meet the implementation requirements, a bounty of at least $250 will be awarded to the contributor. Additional bounty amounts are available and will be rewarded based on the following criteria:

1. Completion of any of the bonus features listed above and/or other bonus features that improve the quality of the submission.
2. Correctness and security: A thorough review of the implementation should convince our team that they are correct and secure, with all requirements met.
3. Code clarity and quality: Succinct, easy-to-follow code with appropriate naming conventions. Utilize Rust’s type system for flexibility and security (e.g., compile-time checks where possible), and avoid external crates. Optimizations should be a lower priority than clarity, but can be included behind a feature flag as a bonus.
4. Documentation quality: Provide comprehensive README’s, Cargo docs, and inline comments where code itself is not self-explanatory. Prioritize clarity and readability.