Added A* algorithm

[jojbrasileiro]

Added A* algorithm implementation to the repository.

Description of Change

References

Checklist

• [X ] Added description of change
• [ X] Added file name matches File name guidelines
• Added tests and example, test must pass
• [X ] Relevant documentation/comments is changed or added
• [X ] PR title follows semantic commit guidelines
• [X ] Search previous suggestions before making a new one, as yours may be a duplicate.
• [X ] I acknowledge that all my contributions will be made under the project's license.

Notes:

[github-actions]

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