Added N-Queens Backtracking Algorithm to backtracking folder

[shashmitha46]

📥 Pull Request

Description

Added the N-Queens algorithm to backtracking-algorithms folder, providing a Python solution with backtracking to solve the N-Queens placement problem.

Issue Fixed: Resolves issue #1159 (Adding N-Queens backtracking algorithm).

Fixes #1159

Type of change

• Bug fix (non-breaking change which fixes an issue)
• New feature (non-breaking change which adds functionality)
• Breaking change (fix or feature that would cause existing functionality to not work as expected)
• Documentation update

Checklist:

• My code follows the style guidelines of this project
• I have performed a self-review of my code
• I have commented my code, particularly in hard-to-understand areas
• I have added tests that prove my fix is effective or that my feature works
• New and existing unit tests pass locally with my changes
• Any dependent changes have been merged and published in downstream modules

[github-actions]

👋 Hi @shashmitha46! Thank you for submitting your first pull request to the Algo project. Great job on the contribution! 🎉 We appreciate your efforts, and our team will review it soon. If you have any questions, feel free to ask. Keep up the great work! 🚀

[github-actions]

🎉 Great job, @shashmitha46! Thank you for submitting your pull request. We appreciate your contribution, and our team will review it shortly.

[github-actions]

⚡️ Lighthouse Report for the Deploy Preview of this PR 🚀

🔗 Site: Algo | Live Site

URL 🌐	Performance	Accessibility	Best Practices	SEO	📊
/algo/	🟡 54	🟢 96	🟡 75	🟡 86	📄
/algo/docs	🔴 49	🟢 96	🟡 75	🟢 100	📄
/algo/blog	🟡 67	🟢 92	🟢 96	🟡 86	📄

[ajay-dhangar]

Please read our contribution guideline for a better understanding of our format and expectations. When writing content, please follow the guidelines to ensure that your contributions are accepted.

[ajay-dhangar]

update your code based on our format

[ajay-dhangar]

Done

[github-actions]

🎉🎉 Thank you for your contribution! Your PR #1291 has been merged! 🎉🎉