Implement Hamiltonian Cycle Finder

[TruongNhanNguyen]

Pull Request Template

Description

See details in the implementation

Type of change

• [x] New feature (non-breaking change which adds functionality)

Checklist:

• [x] I ran bellow commands using the latest version of rust nightly.
• [x] I ran cargo clippy --all -- -D warnings just before my last commit and fixed any issue that was found.
• [x] I ran cargo fmt just before my last commit.
• [x] I ran cargo test just before my last commit and all tests passed.
• [x] I added my algorithm to the corresponding mod.rs file within its own folder, and in any parent folder(s).
• [x] I added my algorithm to DIRECTORY.md with the correct link.
• [x] I checked COUNTRIBUTING.md and my code follows its guidelines.

[codecov-commenter]

Codecov Report

All modified and coverable lines are covered by tests :white_check_mark:

Project coverage is 94.96%. Comparing base (4e59645) to head (b8de9b0). Report is 1 commits behind head on master.

Additional details and impacted files

```diff @@ Coverage Diff @@ ## master #731 +/- ## ========================================== + Coverage 94.95% 94.96% +0.01% ========================================== Files 303 304 +1 Lines 22533 22584 +51 ========================================== + Hits 21396 21447 +51 Misses 1137 1137 ```

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[TruongNhanNguyen]

Can you have a look on this PR (and other PRs in the backtracking category) and review them @vil02.

[TruongNhanNguyen]

Can you review this PR, @vil02?

[vil02]

Failing CI will be fixed by #754.