Create Comprehensive CONTRIBUTING.md

[Abd-Standard]

Summary

The project lacks detailed contribution guidelines for new contributors.

Problem

Potential contributors may be unsure about the development workflow, coding standards, and pull request process, leading to inconsistent contributions and higher maintenance overhead.

Scope
Create a CONTRIBUTING.md file.
Document project setup instructions.
Define branch naming conventions.
Document commit message standards.
Explain pull request requirements.
Add issue reporting guidelines.
Include code review expectations.