Adding contribution.md file

[Nikhil0-3]

By adding file

Wanted to do the following changes :-

How to contribute (fix bugs, add features)
Steps for submitting changes
Project setup instructions
Rules for code style
Code of conduct for respectful behavior
Enhance the project structure
Add the help and support section
Add the pull request section
Add issue report process section

[github-actions]

@Nikhil0-3

Thank you for raising this issue! 🎉🙌

We truly appreciate your contribution to this project and will review the details shortly. 🛠️✨
We will get back to you soon!

Thank you for your patience! 🙏

[Nikhil0-3]

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