Implement Triangular Fuzzy Set Class with Membership Functions and Operations

[Shreya123714]

Description of Change

Added a C implementation of triangular fuzzy sets, including methods for membership, union, intersection, and complement operations.

References

Checklist

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

Notes:
Will add more fuzzy set functions and implement a Fuzzy Inference System (FIS), commonly used in modern control systems, adding them incrementally to ensure clarity and coherence.

[Shreya123714]

@Panquesito7, @tjgurwara9, @alexpantyukhin,

Could you please review my pull request? Thank you! 🙏🙂🙌