Metric conversion API added

[AmruthaPariprolu]

🎯 Title and Issue Number

Closes #427

🗒️ Checklist:

• I have mentioned the issue number in my Pull Request.
• I have gone through rules of when PR will get merged.
• I have commented my code, particularly in hard-to-understand areas
• I have created a helpful and easy to understand README.md
• I have followed proper file structure.
• I have gone through CONTRIBUTING GUIDELINES.md.

Thank you for contributing!❤️

Don't forget to show some love by ⭐ the repository!

[dishamodi0910]

Hey @AmruthaPariprolu, Thank you for creating PR! We will review it super soon. 😇❣️
As we continue to evolve and innovate, we encourage you to share your ideas, feedback, and code to help us push the boundaries of what's possible in the world of APIs🚀.
We hope you have followed CONTRIBUTING GUIDELINES.
Thank you for being an essential part of our community. Together, we'll keep building amazing things!
Don’t forget to ⭐ our repository!
Happy Coding!✨
Will See you soon❣️