Add pull request template

[AAYUSH-SPIDEY-SHARMA]

This PR introduces a PULL_REQUEST_TEMPLATE.md file to the repository. It aims to:

• Provide a clear structure for contributors when submitting PRs.
• Ensure consistency and quality across contributions.
• Facilitate a smoother and faster review process by including essential details upfront.

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🔗 Related Issue

Closes #15

This resolves the issue of missing PR guidelines by creating a standardized PR template that aligns with the repository's needs and improves contributor experience.

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✅ Checklist

Before submitting your PR, ensure the following:

• 📄 Clear Description: I have provided a detailed description of the changes made.
• 🖇️ Issue Linked: I have linked the correct issue and included its number above.
• 🚀 Functionality Tested: I have thoroughly tested the changes, and they work as intended.
• 🔍 Duplicate Check: I have ensured there are no other PRs addressing the same issue or feature.
• 📚 Documentation Updated: The PR template is self-documenting and does not require additional updates.
• ✨ Creative Touch: Added a checklist item to encourage contributors to go beyond minimum expectations.

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💡 Notes to Reviewers

• Feedback on the checklist structure and sections is appreciated.
• Let me know if you'd like additional examples or resources included in the template.

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🌟 Thank you for reviewing this PR and helping improve the project!