Problem

• Contributing to Hacktoberfest repository requires adding your name, profile page, and Hello World script as part of participation.

Solution

• Added my name to CONTRIBUTING.md following the required format.
• Created my profile markdown file in the profiles directory.
• Added a Hello World script in the appropriate scripts folder with required metadata.

Changes proposed in this Pull Request :

• 1. Added my name to CONTRIBUTING.md
• 2. Created profile file Piyush_Sharma.md in profiles directory
• 3. Added Hello World script hello_world_piyushsharma.js in scripts/python3/
• 4. Included metadata in script file (LANGUAGE, ENV, AUTHOR, GITHUB)

All changes follow the repository guidelines. Looking forward to your review and feedback. Thank you! 🎉